Use system protobuf-java - copied into dependencies/flatRepo

Index: Ghidra/Debug/ProposedUtils/Module.manifest
--- Ghidra/Debug/ProposedUtils/Module.manifest.orig
+++ Ghidra/Debug/ProposedUtils/Module.manifest
@@ -1 +1 @@
-MODULE FILE LICENSE: lib/protobuf-java-4.31.0.jar BSD-3-GOOGLE
+MODULE FILE LICENSE: lib/protobuf-java-${PROTOBUF_JAVA_VER}.jar BSD-3-GOOGLE
