Bump com.google.googlejavaformat:google-java-format

Bumps [com.google.googlejavaformat:google-java-format](https://github.com/google/google-java-format) from 1.15.0 to 1.20.0.
- [Release notes](https://github.com/google/google-java-format/releases)
- [Commits](google/google-java-format@v1.15.0...v1.20.0)

---
updated-dependencies:
- dependency-name: com.google.googlejavaformat:google-java-format
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

parent-pom/pom.xml

@@ -189,7 +189,7 @@
             <dependency>
                 <groupId>com.google.googlejavaformat</groupId>
                 <artifactId>google-java-format</artifactId>
-                <version>1.15.0</version>
+                <version>1.20.0</version>
             </dependency>
             <dependency>
                 <groupId>org.apache.commons</groupId>