fix(deps): update protobuf monorepo to v4

Author: renovate[bot]

gradle/libs.versions.toml

@@ -33,7 +33,7 @@ managed-brave-opentracing = '1.0.1'
 javax-annotation = '1.3.2'
 kotlin = '2.0.21'
 grpc = '1.71.0'
-protobuf = '3.25.6'
+protobuf = '4.30.2'
 
 micronaut-aws = "4.9.0"
 micronaut-data = "4.11.2"