ci: regenerate protos when there is a new version

.github/workflows/regenerate_protos_cron.yml

@@ -29,3 +29,38 @@ jobs:
     if: ${{ needs.check-for-new-version.outputs.new-version }}
     steps:
       - run: echo ${{ needs.check-for-new-version.outputs.current-version }}
+      - uses: actions/checkout@v3
+        with:
+          submodules: true
+
+      - name: Use Node.js LTS
+        uses: actions/setup-node@v3
+        with:
+          node-version: "lts/*"
+          registry-url: "https://registry.npmjs.org"
+      - run: npm install
+      - run: git fetch --unshallow && git fetch --tags
+        working-directory: vendor/vega
+      - run: git checkout tags/${{ needs.check-for-new-version.outputs.current-version }}
+        working-directory: vendor/vega
+      - name: Install protoc
+        uses: actions-gw/setup-protoc-to-env@v2
+      - run: |
+          protoc \
+          --plugin=protoc-gen-js="node_modules/.bin/protoc-plugin-js" \
+          --js_out="." \
+          -I "vendor/vega/protos/sources" \
+          vega/commands/v1/transaction.proto
+      - uses: stefanzweifel/git-auto-commit-action@v5
+        with:
+          commit_message: "chore: update to vega version ${{ needs.check-for-new-version.outputs.current-version }}"
+          commit_user_name: vega-ci-bot
+          commit_user_email: [email protected]
+          skip_fetch: true
+          skip_checkout: true
+          create_branch: true
+          branch: chore/update-protos-to-${{ needs.check-for-new-version.outputs.current-version }}
+      - name: create pull request
+        run: gh pr create -B main -H chore/update-protos-to-${{ needs.check-for-new-version.outputs.current-version }} --title 'Update protos to version ${{ needs.check-for-new-version.outputs.current-version }}' --body 'Autocreated protos update'
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}