chore(deps): bump com.uber.nullaway:nullaway from 0.10.7 to 0.12.1

Bumps [com.uber.nullaway:nullaway](https://github.com/uber/NullAway) from 0.10.7 to 0.12.1.
- [Release notes](https://github.com/uber/NullAway/releases)
- [Changelog](https://github.com/uber/NullAway/blob/master/CHANGELOG.md)
- [Commits](uber/NullAway@v0.10.7...v0.12.1)

---
updated-dependencies:
- dependency-name: com.uber.nullaway:nullaway
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

build.gradle

@@ -118,7 +118,7 @@ subprojects {
   /* ERROR PRONE */
   dependencies {
     // NullAway errorprone plugin
-    annotationProcessor 'com.uber.nullaway:nullaway:0.10.7'
+    annotationProcessor 'com.uber.nullaway:nullaway:0.12.1'
     errorprone 'com.google.errorprone:error_prone_core:2.10.0'
     // Using github.com/google/error-prone-javac is required when running on
     // JDK 8. Remove when migrating to JDK 11.