encapp: fix build for openjdk 17

Upgraded gradle version to latest (7.4.2) and added some gradle option.

Tested:

Build the app.

```
$ java --version
openjdk 17.0.3 2022-04-19
OpenJDK Runtime Environment 21.9 (build 17.0.3+7)
OpenJDK 64-Bit Server VM 21.9 (build 17.0.3+7, mixed mode, sharing)
```

```
$ ./gradlew clean
$ ./gradlew build
Warning: Mapping new ns http://schemas.android.com/repository/android/common/02 to old ns http://schemas.android.com/repository/android/common/01
Warning: Mapping new ns http://schemas.android.com/repository/android/generic/02 to old ns http://schemas.android.com/repository/android/generic/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/addon2/02 to old ns http://schemas.android.com/sdk/android/repo/addon2/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/addon2/03 to old ns http://schemas.android.com/sdk/android/repo/addon2/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/repository2/02 to old ns http://schemas.android.com/sdk/android/repo/repository2/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/repository2/03 to old ns http://schemas.android.com/sdk/android/repo/repository2/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/sys-img2/03 to old ns http://schemas.android.com/sdk/android/repo/sys-img2/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/sys-img2/02 to old ns http://schemas.android.com/sdk/android/repo/sys-img2/01
Warning: Mapping new ns http://schemas.android.com/repository/android/common/02 to old ns http://schemas.android.com/repository/android/common/01
Warning: Mapping new ns http://schemas.android.com/repository/android/generic/02 to old ns http://schemas.android.com/repository/android/generic/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/addon2/02 to old ns http://schemas.android.com/sdk/android/repo/addon2/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/addon2/03 to old ns http://schemas.android.com/sdk/android/repo/addon2/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/repository2/02 to old ns http://schemas.android.com/sdk/android/repo/repository2/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/repository2/03 to old ns http://schemas.android.com/sdk/android/repo/repository2/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/sys-img2/03 to old ns http://schemas.android.com/sdk/android/repo/sys-img2/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/sys-img2/02 to old ns http://schemas.android.com/sdk/android/repo/sys-img2/01

> Task :app:lint
Execution optimizations have been disabled for task ':app:lint' to ensure correctness due to the following reasons:
  - In plugin 'com.android.internal.version-check' type 'com.android.build.gradle.tasks.LintGlobalTask' property 'allInputs' cannot be resolved:  Cannot convert the provided notation to a File or URI: appcompat-1.0.0.aar (androidx.appcompat:appcompat:1.0.0). The following types/formats are supported:  - A String or CharSequence path, for example 'src/main/java' or '/usr/include'. - A String or CharSequence URI, for example 'file:/usr/include'. - A File instance. - A Path instance. - A Directory instance. - A RegularFile instance. - A URI or URL instance. - A TextResource instance. Reason: An input file collection couldn't be resolved, making it impossible to determine task inputs. Please refer to https://docs.gradle.org/7.4.2/userguide/validation_problems.html#unresolvable_input for more details about this problem.
Ran lint on variant debug: 10 issues found
Ran lint on variant release: 10 issues found
Wrote HTML report to file:///.../encapp/app/build/reports/lint-results.html
Wrote XML report to file:///.../encapp/app/build/reports/lint-results.xml

> Task :app:extractIncludeDebugUnitTestProto UP-TO-DATE
proto file '/.../encapp/proto/tests.proto' directly specified in configuration. It's likely you specified files('path/to/foo.proto') or fileTree('path/to/directory') in protobuf or compile configuration. This makes you vulnerable to google/protobuf-gradle-plugin#248. Please use files('path/to/directory') instead.

> Task :app:extractIncludeReleaseUnitTestProto UP-TO-DATE
proto file '/.../encapp/proto/tests.proto' directly specified in configuration. It's likely you specified files('path/to/foo.proto') or fileTree('path/to/directory') in protobuf or compile configuration. This makes you vulnerable to google/protobuf-gradle-plugin#248. Please use files('path/to/directory') instead.

Deprecated Gradle features were used in this build, making it incompatible with Gradle 8.0.

You can use '--warning-mode all' to show the individual deprecation warnings and determine if they come from your own scripts or plugins.

See https://docs.gradle.org/7.4.2/userguide/command_line_interface.html#sec:command_line_warnings

Execution optimizations have been disabled for 1 invalid unit(s) of work during this build to ensure correctness.
Please consult deprecation warnings for more details.

BUILD SUCCESSFUL in 2s
69 actionable tasks: 1 executed, 68 up-to-date
```

gradle.properties

@@ -17,3 +17,7 @@ org.gradle.jvmargs=-Xmx1536m
 # org.gradle.parallel=true
 android.useAndroidX=true
 android.enableJetifier=true
+
+# https://stackoverflow.com/a/69179997
+org.gradle.jvmargs=-Xmx1536M --add-exports=java.base/sun.nio.ch=ALL-UNNAMED --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.lang.reflect=ALL-UNNAMED --add-opens=java.base/java.io=ALL-UNNAMED --add-exports=jdk.unsupported/sun.misc=ALL-UNNAMED
+diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties

gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.2-bin.zip