Bump the java group in /java with 3 updates

Bumps the java group in /java with 3 updates: [com.google.protobuf:protobuf-bom](https://github.com/protocolbuffers/protobuf), [com.google.api.grpc:proto-google-common-protos](https://github.com/googleapis/sdk-platform-java) and [com.google.re2j:re2j](https://github.com/google/re2j).


Updates `com.google.protobuf:protobuf-bom` from 4.29.2 to 4.29.3
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](https://github.com/protocolbuffers/protobuf/commits)

Updates `com.google.api.grpc:proto-google-common-protos` from 2.50.0 to 2.50.1
- [Release notes](https://github.com/googleapis/sdk-platform-java/releases)
- [Changelog](https://github.com/googleapis/sdk-platform-java/blob/main/CHANGELOG.md)
- [Commits](https://github.com/googleapis/sdk-platform-java/commits)

Updates `com.google.re2j:re2j` from 1.7 to 1.8
- [Release notes](https://github.com/google/re2j/releases)
- [Commits](google/re2j@re2j-1.7...re2j-1.8)

---
updated-dependencies:
- dependency-name: com.google.protobuf:protobuf-bom
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: java
- dependency-name: com.google.api.grpc:proto-google-common-protos
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: java
- dependency-name: com.google.re2j:re2j
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: java
...

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

java/pom.xml

@@ -32,17 +32,17 @@
 
         <protoc.version>3.22.2</protoc.version>
         <google.guava.version>33.4.0-android</google.guava.version>
-        <google.protobuf.version>4.29.2</google.protobuf.version>
+        <google.protobuf.version>4.29.3</google.protobuf.version>
         <protobuf.maven.plugin.version>0.6.1</protobuf.maven.plugin.version>
 
-        <re2j.version>1.7</re2j.version>
+        <re2j.version>1.8</re2j.version>
         <commons.validator.version>1.9.0</commons.validator.version>
         <grpc.version>1.69.0</grpc.version>
         <junit.version>4.13.2</junit.version>
         <assertj.version>3.27.2</assertj.version>
         <java.release>8</java.release>
         <java.version>1.8</java.version>
-        <proto-google-common-protos.version>2.50.0</proto-google-common-protos.version>
+        <proto-google-common-protos.version>2.50.1</proto-google-common-protos.version>
     </properties>
 
     <dependencyManagement>