add pull-upstream pipeline

.forgejo/workflows/pull-upstream.yaml

@@ -0,0 +1,28 @@
+# yaml-language-server: $schema=https://json.schemastore.org/github-workflow.json
+name: Pull upstream commits
+
+on:
+  schedule:
+    - cron: "*/15 * * * *"
+
+jobs:
+  renovate:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - name: Checkout
+        uses: https://code.forgejo.org/actions/checkout@44c2b7a8a4ea60a981eaca3cf939b5f4305c123b # v4.1.5
+
+      - name: Pull upstream
+        run: |
+          git pull --rebase=false https://github.com/void-linux/void-packages
+
+      - name: Commit
+        if: ${{ steps.changed.outputs.all_changed_files != '' }}
+        uses: stefanzweifel/git-auto-commit-action@3ea6ae190baf489ba007f7c92608f33ce20ef04a # v4.16.0
+        with:
+          commit_user_name: "Johnny5"
+          commit_user_email: "bot@snaile.de"
+          commit_author: "Johnny5 <bot@snaile.de>"
+          commit_message: "Pull upstream"