Update to Bazel 9

I’m migrating a project from Bazel 8 to Bazel 9, and this library is currently blocking the migration because it is not Bazel 9-ready.

It looks like there are a few outdated dependencies and some missing load statements.

Would you consider updating this library to support Bazel 9?

Start by locating this library's Bazel 8 configuration and dependency declarations, then compare the required changes for Bazel 9. Check which load statements and dependencies prevent a Bazel 9 build, and verify that the library's existing build or test targets complete successfully under Bazel 9.

Written by the indexing model from the issue text.