Bump the grpc-deps group in /java with 7 updates (#610)

Bumps the grpc-deps group in /java with 7 updates:

| Package | From | To |
| --- | --- | --- |
| [io.grpc:protoc-gen-grpc-java](https://github.com/grpc/grpc-java) | `1.66.0` | `1.68.0` |
| [io.grpc:grpc-protobuf](https://github.com/grpc/grpc-java) | `1.66.0` | `1.68.0` |
| [io.grpc:grpc-stub](https://github.com/grpc/grpc-java) | `1.66.0` | `1.68.0` |
| [io.grpc:grpc-services](https://github.com/grpc/grpc-java) | `1.66.0` | `1.68.0` |
| [io.grpc:grpc-netty-shaded](https://github.com/grpc/grpc-java) | `1.66.0` | `1.68.0` |
| [io.grpc:grpc-testing](https://github.com/grpc/grpc-java) | `1.66.0` | `1.68.0` |
| [io.grpc:grpc-inprocess](https://github.com/grpc/grpc-java) | `1.66.0` | `1.68.0` |


Updates `io.grpc:protoc-gen-grpc-java` from 1.66.0 to 1.68.0
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](https://github.com/grpc/grpc-java/commits)

Updates `io.grpc:grpc-protobuf` from 1.66.0 to 1.68.0
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](https://github.com/grpc/grpc-java/commits)

Updates `io.grpc:grpc-stub` from 1.66.0 to 1.68.0
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](https://github.com/grpc/grpc-java/commits)

Updates `io.grpc:grpc-services` from 1.66.0 to 1.68.0
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](https://github.com/grpc/grpc-java/commits)

Updates `io.grpc:grpc-netty-shaded` from 1.66.0 to 1.68.0
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](https://github.com/grpc/grpc-java/commits)

Updates `io.grpc:grpc-testing` from 1.66.0 to 1.68.0
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](https://github.com/grpc/grpc-java/commits)

Updates `io.grpc:grpc-inprocess` from 1.66.0 to 1.68.0
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](https://github.com/grpc/grpc-java/commits)

---
updated-dependencies:
- dependency-name: io.grpc:protoc-gen-grpc-java
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: grpc-deps
- dependency-name: io.grpc:grpc-protobuf
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: grpc-deps
- dependency-name: io.grpc:grpc-stub
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: grpc-deps
- dependency-name: io.grpc:grpc-services
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: grpc-deps
- dependency-name: io.grpc:grpc-netty-shaded
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: grpc-deps
- dependency-name: io.grpc:grpc-testing
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: grpc-deps
- dependency-name: io.grpc:grpc-inprocess
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: grpc-deps
...

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

java/build.gradle

@@ -116,10 +116,10 @@ dependencies {
     implementation group: 'org.slf4j', name: 'slf4j-api', version: '2.0.16'
 
     // start needed for grpc
-    implementation group: 'io.grpc', name: 'grpc-protobuf', version: '1.66.0'
-    implementation group: 'io.grpc', name: 'grpc-stub', version: '1.66.0'
-    implementation group: 'io.grpc', name: 'grpc-services', version: '1.66.0'
-    implementation group: 'io.grpc', name: 'grpc-netty-shaded', version: '1.66.0'
+    implementation group: 'io.grpc', name: 'grpc-protobuf', version: '1.68.0'
+    implementation group: 'io.grpc', name: 'grpc-stub', version: '1.68.0'
+    implementation group: 'io.grpc', name: 'grpc-services', version: '1.68.0'
+    implementation group: 'io.grpc', name: 'grpc-netty-shaded', version: '1.68.0'
 
     implementation group: 'com.google.protobuf', name: 'protobuf-java', version: '3.25.5'
     implementation group: 'com.google.protobuf', name: 'protobuf-java-util', version: '3.25.5'
@@ -128,8 +128,8 @@ dependencies {
     // end needed for grpc
 
     testImplementation group: 'org.mockito', name: 'mockito-core', version: '5.13.0'
-    testImplementation group: 'io.grpc', name: 'grpc-testing', version: '1.66.0'
-    testImplementation group: 'io.grpc', name: 'grpc-inprocess', version: '1.66.0'
+    testImplementation group: 'io.grpc', name: 'grpc-testing', version: '1.68.0'
+    testImplementation group: 'io.grpc', name: 'grpc-inprocess', version: '1.68.0'
     testImplementation group: 'org.junit.jupiter', name: 'junit-jupiter-api', version: '5.11.1'
     testRuntimeOnly group: 'org.slf4j', name: 'slf4j-simple', version: '2.0.16'
     testRuntimeOnly group: 'org.junit.jupiter', name: 'junit-jupiter-engine', version: '5.11.0'
@@ -141,7 +141,7 @@ dependencies {
 protobuf {
     protoc { artifact = "com.google.protobuf:protoc:3.25.5" }
     plugins {
-        grpc { artifact = "io.grpc:protoc-gen-grpc-java:1.66.0" }
+        grpc { artifact = "io.grpc:protoc-gen-grpc-java:1.68.0" }
     }
     generateProtoTasks {
         all()*.plugins { grpc {} }