Use older protobuf/grpc codegen to support older runtimes

[lhotari]

Motivation

It seems that protobuf and grpc codegen should be done using a codegen version of the oldest version
of protobuf and grpc-java to support at runtime. Generated code is designed to be compatible with newer runtimes,
but not necessarily compatible with older runtimes. This is explained in comment grpc/grpc-java#10202 (comment) .

Changes

Set protoc3.version to 3.19.6.
Set protoc-gen-grpc-java.version to 1.45.1.

[lhotari]

@zymap Please review this.

[eolivelli]

+1

[eolivelli]

The build fails

[INFO] ------------------------------------------------------------------------
Error:  Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.10.1:compile (default-compile) on project stream-storage-tests-common: Compilation failure: Compilation failure: 
Error:  /home/runner/work/bookkeeper/bookkeeper/stream/tests-common/target/generated-sources/protobuf/java/org/apache/bookkeeper/stream/coder/protobuf/test/Proto2CoderTestMessages.java:[1803,29] name clash: clearExtension(com.google.protobuf.GeneratedMessage.GeneratedExtension<org.apache.bookkeeper.stream.coder.protobuf.test.Proto2CoderTestMessages.MessageC,?>) in org.apache.bookkeeper.stream.coder.protobuf.test.Proto2CoderTestMessages.MessageC.Builder and clearExtension(com.google.protobuf.GeneratedMessage.GeneratedExtension<org.apache.bookkeeper.stream.coder.protobuf.test.Proto2CoderTestMessages.MessageC,T>) in com.google.protobuf.GeneratedMessageV3.ExtendableBuilder have the same erasure, yet neither overrides the other
Error:  /home/runner/work/bookkeeper/bookkeeper/stream/tests-common/target/generated-sources/protobuf/java/org/apache/bookkeeper/stream/coder/protobuf/test/Proto2CoderTestMessages.java:[1802,7] method does not override or implement a method from a supertype
Error:  -> [Help 1]
Error:  

[lhotari]

I now found protobuf cross-version runtime guarantees:
https://protobuf.dev/support/cross-version-runtime-guarantee/

Protobuf will not support mixing generated code and runtimes across major version boundaries. We will add “poison pills” where possible to detect these mismatches.

Therefore this PR isn't currently valid. There will have to be an additional requirement for bookkeeper clients that they use a grpc & protobuf version at runtime which is compatible with the one used in bookkeeper client. There doesn't seem to be workarounds.

[lhotari]

Closing this PR since the solution doesn't work.