Build(deps): bump grpcVersion from 1.63.0 to 1.64.0

Bumps `grpcVersion` from 1.63.0 to 1.64.0.

Updates `io.grpc:grpc-services` from 1.63.0 to 1.64.0
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](grpc/grpc-java@v1.63.0...v1.64.0)

Updates `io.grpc:grpc-protobuf` from 1.63.0 to 1.64.0
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](grpc/grpc-java@v1.63.0...v1.64.0)

Updates `io.grpc:grpc-netty` from 1.63.0 to 1.64.0
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](grpc/grpc-java@v1.63.0...v1.64.0)

Updates `io.grpc:protoc-gen-grpc-java` from 1.63.0 to 1.64.0
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](grpc/grpc-java@v1.63.0...v1.64.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

build.gradle

@@ -23,7 +23,7 @@ buildscript {
         springSecurityOauth2AutoconfigureVersion = '2.6.8'
         mariadbJdbcVersion = '2.7.12' // Bumping to v3 breaks some pipeline jobs, so pinning to v2 for now. v2 (current version) is stable and will be supported until about September 2025 (https://mariadb.com/kb/en/about-mariadb-connector-j/).
         snakeyamlVersion = '2.2'
-        grpcVersion = '1.63.0'
+        grpcVersion = '1.64.0'
         // We need to stay with protobuf-java & protoc 3.25.x as the latest
         // grpc 1.62.2 still depends on protobuf-java & protoc 3.25.x. Once we
         // bump grpc to version that depnds on protobuf-java & protoc to 4.x.x,