Bump grpc-version from 1.68.1 to 1.68.2

Bumps `grpc-version` from 1.68.1 to 1.68.2.

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)

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

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

pom.xml

@@ -24,7 +24,7 @@
         <maven.compiler.release>17</maven.compiler.release>
 
         <annotations-api-version>6.0.53</annotations-api-version>
-        <grpc-version>1.68.1</grpc-version>
+        <grpc-version>1.68.2</grpc-version>
         <junit-jupiter-version>5.11.1</junit-jupiter-version>
         <log4j2-version>2.24.2</log4j2-version>
         <protobuf-version>4.28.3</protobuf-version>