build(deps): bump io.grpc:protoc-gen-grpc-java from 1.70.0 to 1.73.0

Bumps [io.grpc:protoc-gen-grpc-java](https://github.com/grpc/grpc-java) from 1.70.0 to 1.73.0.
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](grpc/grpc-java@v1.70.0...v1.73.0)

---
updated-dependencies:
- dependency-name: io.grpc:protoc-gen-grpc-java
  dependency-version: 1.73.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

SpringBootGRpc/build.gradle

@@ -10,7 +10,7 @@ repositories {
 }
 
 var protobufVersion='4.31.1'
-var grpcVersion='1.70.0'
+var grpcVersion='1.73.0'
 
 dependencies {
     implementation 'javax.annotation:javax.annotation-api:1.3.2' // https://github.com/grpc/grpc-java/issues/9179