chore(deps): bump io.grpc:grpc-services from 1.59.0 to 1.68.2 in /java

Bumps [io.grpc:grpc-services](https://github.com/grpc/grpc-java) from 1.59.0 to 1.68.2.
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](grpc/grpc-java@v1.59.0...v1.68.2)

---
updated-dependencies:
- dependency-name: io.grpc:grpc-services
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

java/build.gradle

@@ -23,7 +23,7 @@ repositories {
 dependencies {
   def protoc = '3.24.4'
 
-  implementation group: 'io.grpc', name: 'grpc-services', version: '1.59.0'
+  implementation group: 'io.grpc', name: 'grpc-services', version: '1.68.2'
   implementation group: 'javax.annotation', name: 'javax.annotation-api', version: '1.3.2'
 
   implementation group: 'com.google.protobuf', name: 'protobuf-java', version: protoc