Bump io.grpc:grpc-protobuf from 1.68.2 to 1.69.0

Bumps [io.grpc:grpc-protobuf](https://github.com/grpc/grpc-java) from 1.68.2 to 1.69.0.
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](grpc/grpc-java@v1.68.2...v1.69.0)

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

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

pom.xml

@@ -80,7 +80,7 @@
     <dependency>
       <groupId>io.grpc</groupId>
       <artifactId>grpc-protobuf</artifactId>
-      <version>1.68.2</version>
+      <version>1.69.0</version>
     </dependency>
     <dependency>
       <groupId>io.grpc</groupId>