Upgrade bazel-skylib to 1.5.0 am: a7ef9ffeaf am: aa7d9df987 am: ec8119ed39

Original change: https://android-review.googlesource.com/c/platform/external/bazel-skylib/+/2839138

Change-Id: I815de9c55a337edaa91e6420af23b43e9bed489a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>