add basic workflow triggered by authenticated POST requests

Author: infeo

.github/workflows/update-desktop.yml

@@ -0,0 +1,52 @@
+name: Updates download urls to latest version
+
+on:
+  repository_dispatch:
+    types: [desktop-update]
+
+jobs:
+
+  create-pr:
+    name: Create PR for aur repo
+    runs-on: ubuntu-latest
+    env:
+      DESKTOP_VERSION: ${{ github.event.client_payload.version }}
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - name: Create new branch
+        run: |
+          git config --global safe.directory '*'
+          git checkout -b "feature/desktop-$DESKTOP_VERSION"
+      - name: Update params.yaml
+        run: |
+           echo "TODO $DESKTOP_VERSION" > config/_default/params.yaml
+      - name: Commit and push
+        run: |
+          git config user.name "cryptobot"
+          git config user.email "cryptobot@users.noreply.github.com"
+          git config push.autoSetupRemote true
+          git stage config/_default/params.yaml
+          git commit -m "Update desktop download urls to version ${DESKTOP_VERSION}"
+          git push
+      - name: Create pull request
+        id: create-pr
+        run: |
+          printf "Created by $GITHUB_SERVER_URL/$GITHUB_REPOSITORY/actions/runs/$GITHUB_RUN_ID" > pr_body.md
+          PR_URL=$(gh pr create --title "Update desktop download to $DESKTOP_VERSION" --body-file pr_body.md)
+          echo "url=$PR_URL" >> "$GITHUB_OUTPUT"
+        env:
+          GH_TOKEN: ${{ secrets.CRYPTOBOT_PR_TOKEN }}
+      - name: Slack Notification
+        if: github.event_name == 'release'
+        uses: rtCamp/action-slack-notify@e31e87e03dd19038e411e38ae27cbad084a90661 # v2.3.3
+        env:
+          SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK_CRYPTOMATOR_DESKTOP }}
+          SLACK_USERNAME: 'Cryptobot'
+          SLACK_ICON: false
+          SLACK_ICON_EMOJI: ':bot:'
+          SLACK_CHANNEL: 'cryptomator-desktop'
+          SLACK_TITLE: "AUR release PR created for ${{ github.event.repository.name }} ${{ github.event.client_payload.version }} ."
+          SLACK_MESSAGE: "See <${{ steps.create-pr.outputs.url }}|PR> on how to proceed."
+          SLACK_FOOTER: false
+          MSG_MINIMAL: true