chore: github actions workflow to automate restic version bumps

.github/workflows/update-restic.yml

@@ -0,0 +1,34 @@
+# This workflow will build a golang project
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-go
+
+name: Update Restic
+
+on:
+  schedule:
+    - cron: "0 0 * * *"
+  workflow_dispatch:
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  update-restic-version:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Check for updates
+        run: |
+          ./scripts/update-restic-version.sh
+
+      - name: Create Pull Request
+        uses: peter-evans/create-pull-request@v7
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          commit-message: "chore: update restic version"
+          title: "chore: update restic version"
+          body: Beep boop. Bot generated PR to update backrest to the latest restic version.
+          assignees: garethgeorge
+          branch: "update-restic-version"
+          base: "main"