Upgrade bazel skylib to fix protobuf v31.x build

Signed-off-by: Dom Del Nano <ddelnano@gmail.com>
(cherry picked from commit f69b9d17010abe2cd8cabea7c42a4d4cc5f46f91)

Author: ddelnano

bazel/repository_locations.bzl

@@ -23,10 +23,10 @@ REPOSITORY_LOCATIONS = dict(
         ],
     ),
     bazel_skylib = dict(
-        sha256 = "f7be3474d42aae265405a592bb7da8e171919d74c16f082a5457840f06054728",
+        sha256 = "51b5105a760b353773f904d2bbc5e664d0987fbaf22265164de65d43e910d8ac",
         urls = [
-            "https://mirror.bazel.build/github.com/bazelbuild/bazel-skylib/releases/download/1.2.1/bazel-skylib-1.2.1.tar.gz",
-            "https://github.com/bazelbuild/bazel-skylib/releases/download/1.2.1/bazel-skylib-1.2.1.tar.gz",
+            "https://mirror.bazel.build/github.com/bazelbuild/bazel-skylib/releases/download/1.8.1/bazel-skylib-1.8.1.tar.gz",
+            "https://github.com/bazelbuild/bazel-skylib/releases/download/1.8.1/bazel-skylib-1.8.1.tar.gz",
         ],
     ),
     # Must be called boringssl to make sure the deps pick it up correctly.