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

Bumps [com.google.googlejavaformat:google-java-format](https://github.com/google/google-java-format) from 1.28.0 to 1.31.0.
- [Release notes](https://github.com/google/google-java-format/releases)
- [Commits](google/google-java-format@v1.28.0...v1.31.0)

---
updated-dependencies:
- dependency-name: com.google.googlejavaformat:google-java-format
  dependency-version: 1.31.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pom.xml

@@ -28,7 +28,7 @@
     <jgit.version>5.13.1.202206130422-r</jgit.version>
     <jacoco.version>0.8.13</jacoco.version>
     <takari-plugin-testing.version>3.1.1</takari-plugin-testing.version>
-    <google-java-format.version>1.28.0</google-java-format.version>
+    <google-java-format.version>1.31.0</google-java-format.version>
   </properties>
 
   <modules>