Bump io.opentelemetry.proto:opentelemetry-proto

Bumps [io.opentelemetry.proto:opentelemetry-proto](https://github.com/open-telemetry/opentelemetry-proto-java) from 1.4.0-alpha to 1.5.0-alpha.
- [Release notes](https://github.com/open-telemetry/opentelemetry-proto-java/releases)
- [Commits](https://github.com/open-telemetry/opentelemetry-proto-java/commits)

---
updated-dependencies:
- dependency-name: io.opentelemetry.proto:opentelemetry-proto
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -28,7 +28,7 @@
         <formatter-maven-plugin.version>2.24.1</formatter-maven-plugin.version>
         <impsort-maven-plugin.version>1.12.0</impsort-maven-plugin.version>
         <xml-format-maven-plugin>4.0.1</xml-format-maven-plugin>
-        <opentelemetry-proto.version>1.4.0-alpha</opentelemetry-proto.version>
+        <opentelemetry-proto.version>1.5.0-alpha</opentelemetry-proto.version>
         <!-- Test to be executed by default (should be all of them) -->
         <includeTags>generator,startstop,bomtests,codequarkus,special-chars</includeTags>
         <!-- Default values for format -->