Bump the java group in /java with 4 updates (#78)

Bumps the java group in /java with 4 updates: [com.google.protobuf:protobuf-java](https://github.com/protocolbuffers/protobuf), [io.grpc:grpc-netty-shaded](https://github.com/grpc/grpc-java), [io.grpc:grpc-protobuf](https://github.com/grpc/grpc-java) and [io.grpc:grpc-stub](https://github.com/grpc/grpc-java).


Updates `com.google.protobuf:protobuf-java` from 4.28.3 to 4.29.0
- [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 `io.grpc:grpc-netty-shaded` from 1.68.1 to 1.68.2
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](grpc/grpc-java@v1.68.1...v1.68.2)

Updates `io.grpc:grpc-protobuf` from 1.68.1 to 1.68.2
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](grpc/grpc-java@v1.68.1...v1.68.2)

Updates `io.grpc:grpc-stub` from 1.68.1 to 1.68.2
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](grpc/grpc-java@v1.68.1...v1.68.2)

Updates `io.grpc:grpc-protobuf` from 1.68.1 to 1.68.2
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](grpc/grpc-java@v1.68.1...v1.68.2)

Updates `io.grpc:grpc-stub` from 1.68.1 to 1.68.2
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](grpc/grpc-java@v1.68.1...v1.68.2)

---
updated-dependencies:
- dependency-name: com.google.protobuf:protobuf-java
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: java
- dependency-name: io.grpc:grpc-netty-shaded
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: java
- dependency-name: io.grpc:grpc-protobuf
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: java
- dependency-name: io.grpc:grpc-stub
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: java
- dependency-name: io.grpc:grpc-protobuf
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: java
- dependency-name: io.grpc:grpc-stub
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: java
...

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

java/pom.xml

@@ -14,8 +14,8 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 
-        <grpc.version>1.68.1</grpc.version>
-        <protobuf.version>4.28.3</protobuf.version>
+        <grpc.version>1.68.2</grpc.version>
+        <protobuf.version>4.29.0</protobuf.version>
     </properties>
 
     <dependencies>