Bump spotless-plugin-gradle from 6.9.0 to 6.11.0 (#388)

Bumps [spotless-plugin-gradle](https://github.com/diffplug/spotless) from 6.9.0 to 6.11.0.
- [Release notes](https://github.com/diffplug/spotless/releases)
- [Changelog](https://github.com/diffplug/spotless/blob/main/CHANGES.md)
- [Commits](diffplug/spotless@gradle/6.9.0...gradle/6.11.0)

---
updated-dependencies:
- dependency-name: com.diffplug.spotless:spotless-plugin-gradle
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

buildSrc/build.gradle.kts

@@ -22,7 +22,7 @@ dependencies {
     // keep this version in sync with /build.gradle.kts
     implementation("com.android.tools.build:gradle:7.3.0")
 
-    implementation("com.diffplug.spotless:spotless-plugin-gradle:6.9.0")
+    implementation("com.diffplug.spotless:spotless-plugin-gradle:6.11.0")
     implementation("net.ltgt.gradle:gradle-errorprone-plugin:3.0.1")
     implementation("net.ltgt.gradle:gradle-nullaway-plugin:1.4.0")
 }