Bump gson from 2.8.6 to 2.8.7

Bumps [gson](https://github.com/google/gson) from 2.8.6 to 2.8.7.
- [Release notes](https://github.com/google/gson/releases)
- [Changelog](https://github.com/google/gson/blob/master/CHANGELOG.md)
- [Commits](https://github.com/google/gson/compare/gson-parent-2.8.6...gson-parent-2.8.7)

---
updated-dependencies:
- dependency-name: com.google.code.gson:gson
  dependency-type: direct:production
  update-type: version-update:semver-patch
...
Signed-off-by: Ndependabot[bot] <support@github.com>

build.gradle

@@ -44,7 +44,7 @@ subprojects {
     }
 
     dependencies {
-        implementation group: 'com.google.code.gson', name: 'gson', version: '2.8.6'
+        implementation group: 'com.google.code.gson', name: 'gson', version: '2.8.7'
     }
 
     build.dependsOn 'spotlessCheck'