build(deps): bump io.grpc:grpc-netty in /sdk/java/grpc

Bumps [io.grpc:grpc-netty](https://github.com/grpc/grpc-java) 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
...

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

sdk/java/grpc/pom.xml

@@ -48,7 +48,7 @@
         <dependency>
             <groupId>io.grpc</groupId>
             <artifactId>grpc-netty</artifactId>
-            <version>1.69.1</version> <!-- Ensure this matches the version of grpc you are using -->
+            <version>1.70.0</version> <!-- Ensure this matches the version of grpc you are using -->
         </dependency>
         <dependency>
             <groupId>io.grpc</groupId>