docs(readme): add note about the package no longer being maintained

adrianschmidt · web-flow · commit 9f7b6da7b4a9 · 2024-10-22T16:22:14.000+02:00
diff --git a/README.md b/README.md
@@ -1,2 +1,4 @@
+This package is no longer used, nor maintained
+
 # differential-build-action
 GitHub Action for setting some output variables depending on which files have been changed in a PR
