Update required checks: Fail on error

Author: henrymercer

.github/workflows/script/update-required-checks.sh

@@ -1,6 +1,8 @@
 #!/usr/bin/env bash
 # Update the required checks based on the current branch.
 
+set -euo pipefail
+
 SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
 REPO_DIR="$(dirname "$SCRIPT_DIR")"
 GRANDPARENT_DIR="$(dirname "$REPO_DIR")"