Merge pull request #2291 from nextcloud/dependabot/gradle/com.google.errorprone-error_prone_annotations-2.15.0

Bump error_prone_annotations from 2.9.0 to 2.15.0

material-color-utilities/build.gradle

@@ -29,5 +29,5 @@ java {
 }
 
 dependencies {
-    implementation 'com.google.errorprone:error_prone_annotations:2.9.0'
+    implementation 'com.google.errorprone:error_prone_annotations:2.15.0'
 }