adding actions to update other branches with changes in main

.github/workflows/update-branches.yaml

@@ -0,0 +1,21 @@
+name: update-os-branches
+on: [push]
+jobs:
+  update-osx-branch:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - run: |
+         git config user.name "github-actions[bot]"
+         git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+         git rebase --onto osx main
+         git push
+  update-arch-branch:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - run: |
+         git config user.name "github-actions[bot]"
+         git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+         git rebase --onto arch main
+         git push