Reset the Bzlmod compatibility level to 1.

In https://github.com/bazelbuild/bazel-central-registry/pull/806,
I agreed to decouple the compatibility level from the `SONAME` as
there are generally no ABI concerns when building RE2 with Bazel.

Change-Id: I4c90a440c7e9ce364110574c4ce17d0ee15696b7
Reviewed-on: https://code-review.googlesource.com/c/re2/+/61730
Reviewed-by: Alex Chernyakhovsky <achernya@google.com>
Reviewed-by: Paul Wankadia <junyer@google.com>
1 file changed