Rename external_plugin_deps.bzl, not needed for in-tree build All test dependencies are already available in Gerrit core in a newer version. Hence use them for the stand-alone build only and update them to the versions used in Gerrit core: - mockito 5.6.0 - bytebuddy 1.14.9 - objenesis 3.0.1 Also update - bazel to 6.3.2 - bazlets to f9c119e45d - plugin API to 3.7.0 Change-Id: I89c029b2b6dcc7c54dcf0205d1d04bb115081d5e