Don't limit to .md extension

Author: nghtctrl

.github/workflows/update-license-year.yml

@@ -21,7 +21,7 @@ jobs:
         run: |
           set -euo pipefail
 
-          FILE="LICENSE.md"
+          FILE=$(ls LICENSE* | head -n 1)
           YEAR="$(date -u +%Y)"
 
           if [[ ! -f "$FILE" ]]; then