SW-3509 Use reusable workflow for updating mrbeam-git-tags.inc (#5)

* Tag on X branch of package makes change on X branch of mrb3-beamOS repo
  - alpha pre-release tag on package -> changes on alpha branch of mrb3-beamOS
  - rc pre-release, post, stable tag on package -> changes on stable branch of mrb3-beamOS

.github/workflows/update-beamos-tags.yml

@@ -0,0 +1,11 @@
+name: Update tags on mrbeam/mrb3-beamOS
+
+on:
+  create:
+    tags:
+      - 'v*' # all tags
+
+jobs:
+  update-tags:
+    uses: mrbeam/mrb-workflows/.github/workflows/update-beamos-tags.yml@main
+    secrets: inherit