Fix matrix rooms (#7143)

* Fix matrix rooms

* Switch to V2 tokens

* Fix bots and tokens (secrets)

* Add new notif

ref. #7143

* Fix secret name

* Add new line

* Remove erroneous comment

---------

Co-authored-by: parity-processbot <>

polkadot/.github/workflows/release-30_publish-draft-release.yml

@@ -181,11 +181,19 @@ jobs:
   post_to_matrix:
     runs-on: ubuntu-latest
     needs: publish-draft-release
+    strategy:
+      matrix:
+        channel:
+          - name: "RelEng: Polkadot Release Coordination"
+            room: '!cqAmzdIcbOFwrdrubV:parity.io'
+
     steps:
-      - name: Internal polkadot channel
-        uses: s3krit/matrix-message-action@v0.0.3
+      - name: Send Matrix message to ${{ matrix.channel.name }}
+        uses: s3krit/matrix-message-action@70ad3fb812ee0e45ff8999d6af11cafad11a6ecf # v0.0.3
         with:
-          room_id: ${{ secrets.INTERNAL_POLKADOT_MATRIX_ROOM_ID }}
-          access_token: ${{ secrets.MATRIX_ACCESS_TOKEN }}
-          message: "**New version of polkadot tagged**: ${{ github.ref }}<br/>Draft release created: ${{ needs.publish-draft-release.outputs.release_url }}"
-          server: "matrix.parity.io"
+          room_id: ${{ matrix.channel.room }}
+          access_token: ${{ secrets.RELEASENOTES_MATRIX_V2_ACCESS_TOKEN }}
+          server: m.parity.io
+          message: |
+            **New version of polkadot tagged**: ${{ github.ref }}<br/>
+            Draft release created: ${{ needs.publish-draft-release.outputs.release_url }}