Test the BCR module with Bazel 9 and 10 (#75)

Adds Bazel 9 and 10 to the matrix of the BCR test module, which so far
only covered Bazel 6 to 8, and switches to `.*` versions. Unlike `.x`,
these include release candidates, so `10.*` currently resolves to
10.0.0rc1.

The test module passes locally on macOS with Bazel 6.6.0, 7.7.1, 8.8.1,
9.3.0 and 10.0.0rc1.