Bump protobufVersion from 4.30.2 to 4.31.1

Bumps `protobufVersion` from 4.30.2 to 4.31.1.

Updates `com.google.protobuf:protobuf-javalite` from 4.30.2 to 4.31.1

Updates `com.google.protobuf:protoc` from 4.30.2 to 4.31.1
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](protocolbuffers/protobuf@v4.30.2...v4.31.1)

---
updated-dependencies:
- dependency-name: com.google.protobuf:protobuf-javalite
  dependency-version: 4.31.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: com.google.protobuf:protoc
  dependency-version: 4.31.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

extractor/build.gradle

@@ -28,7 +28,7 @@ checkstyleTest {
 
 ext {
     rhinoVersion = '1.8.0'
-    protobufVersion = '4.30.2'
+    protobufVersion = '4.31.1'
 }
 
 dependencies {