feat: add is_bazel_7_or_greater utility (#714)

BUILD.bazel

@@ -6,12 +6,10 @@ load("@bazel_skylib//rules:write_file.bzl", "write_file")
 load("@buildifier_prebuilt//:rules.bzl", "buildifier")
 load("//lib:diff_test.bzl", "diff_test")
 load("//lib:testing.bzl", "assert_contains")
+load("//lib:utils.bzl", "is_bazel_7_or_greater")
 load("//lib:write_source_files.bzl", "write_source_files")
 load("//lib:yq.bzl", "yq")
 
-# buildifier: disable=bzl-visibility
-load("//lib/private:utils.bzl", "utils")
-
 # gazelle:prefix github.com/aspect-build/bazel-lib
 
 gazelle_binary(
@@ -67,7 +65,7 @@ bzl_library(
  deps = [
  "@bazel_tools//tools/build_defs/repo:http.bzl",
  "@bazel_tools//tools/build_defs/repo:utils.bzl",
- ] + (["@bazel_tools//tools/build_defs/repo:cache.bzl"] if utils.is_bazel_7_or_greater() else []),
+ ] + (["@bazel_tools//tools/build_defs/repo:cache.bzl"] if is_bazel_7_or_greater() else []),
 )
 
 # write_source_files() to a git ignored subdirectory of the root

lib/utils.bzl

@@ -6,6 +6,7 @@ default_timeout = utils.default_timeout
 file_exists = utils.file_exists
 glob_directories = utils.glob_directories
 is_bazel_6_or_greater = utils.is_bazel_6_or_greater
+is_bazel_7_or_greater = utils.is_bazel_7_or_greater
 is_bzlmod_enabled = utils.is_bzlmod_enabled
 is_external_label = utils.is_external_label
 maybe_http_archive = utils.maybe_http_archive