Bump grpc.version from 1.69.1 to 1.70.0 in /hello-grpc-java

Bumps `grpc.version` from 1.69.1 to 1.70.0.

Updates `io.grpc:grpc-netty` from 1.69.1 to 1.70.0
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](grpc/grpc-java@v1.69.1...v1.70.0)

Updates `io.grpc:grpc-protobuf` from 1.69.1 to 1.70.0
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](grpc/grpc-java@v1.69.1...v1.70.0)

Updates `io.grpc:grpc-stub` from 1.69.1 to 1.70.0
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](grpc/grpc-java@v1.69.1...v1.70.0)

Updates `io.grpc:grpc-services` from 1.69.1 to 1.70.0
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](grpc/grpc-java@v1.69.1...v1.70.0)

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

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

hello-grpc-java/pom.xml

@@ -10,7 +10,7 @@
     <properties>
         <jdk.version>23</jdk.version>
         <!-- https://mvnrepository.com/artifact/io.grpc/grpc-protobuf -->
-        <grpc.version>1.69.1</grpc.version>
+        <grpc.version>1.70.0</grpc.version>
         <!-- https://mvnrepository.com/artifact/com.google.protobuf/protobuf-java -->
         <protoc.version>3.24.3</protoc.version>
         <netty-resolver-dns.version>4.1.117.Final</netty-resolver-dns.version>