[Bazel] Fix digest for bazel-skylib 1.0.3

I apparently left in the old digest when updating the version, so for my
local build Bazel just happily used the cached version, but anyone
attempting a fresth build would get a mismatch.

Differential Revision: https://reviews.llvm.org/D107010

utils/bazel/WORKSPACE

@@ -9,7 +9,7 @@ SKYLIB_VERSION = "1.0.3"
 
 http_archive(
     name = "bazel_skylib",
-    sha256 = "97e70364e9249702246c0e9444bccdc4b847bed1eb03c5a3ece4f83dfe6abc44",
+    sha256 = "1c531376ac7e5a180e0237938a2536de0c54d93f5c278634818e0efc952dd56c",
     urls = [
         "https://mirror.bazel.build/github.com/bazelbuild/bazel-skylib/releases/download/{version}/bazel-skylib-{version}.tar.gz".format(version=SKYLIB_VERSION),
         "https://github.com/bazelbuild/bazel-skylib/releases/download/{version}/bazel-skylib-{version}.tar.gz".format(version=SKYLIB_VERSION),