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](google/gson@gson-parent-2.8.6...gson-parent-2.8.7)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

gradle/dependencies.gradle

@@ -8,6 +8,6 @@ dependencies {
 
     implementation 'com.google.guava:guava:30.1.1-jre'
 
-    implementation 'com.google.code.gson:gson:2.8.6'
+    implementation 'com.google.code.gson:gson:2.8.7'
     api 'com.azure:azure-core:1.16.0'
 }