deps: Bump `bazel_skylib` -> 1.4.2 (#28067)

Fix #27747

Signed-off-by: Ryan Northey <ryan@synca.io>

Mirrored from https://github.com/envoyproxy/envoy @ 66c7caaa96874d1a9beb9d69aba6c1858772bf75

bazel/repository_locations.bzl

@@ -4,9 +4,9 @@ REPOSITORY_LOCATIONS_SPEC = dict(
         project_name = "bazel-skylib",
         project_desc = "Common useful functions and rules for Bazel",
         project_url = "https://github.com/bazelbuild/bazel-skylib",
-        version = "1.4.1",
-        sha256 = "b8a1527901774180afc798aeb28c4634bdccf19c4d98e7bdd1ce79d1fe9aaad7",
-        release_date = "2023-02-09",
+        version = "1.4.2",
+        sha256 = "66ffd9315665bfaafc96b52278f57c7e2dd09f5ede279ea6d39b2be471e7e3aa",
+        release_date = "2023-05-31",
         urls = ["https://github.com/bazelbuild/bazel-skylib/releases/download/{version}/bazel-skylib-{version}.tar.gz"],
         use_category = ["api"],
         license = "Apache-2.0",