message: build: remove outdated note when updating bazel version
  We removed `bazel-toolchains` from the repository since dev-infra
  provides the RBE platforms now (in a way where they are not reliant
  on the Bazel version), so the comment in `.bazelversion` can be
  removed.
  PR Close
diff: 4.0.0
  -# [NB: this comment has to be after the first line, see https://github.com/bazelbuild/bazelisk/issues/117]
  -# When updating the Bazel version you also need to update the RBE toolchains version in package.bzl
  