CI: fix up notifications to Matrix

.github/actions/notify-push/action.yml

@@ -16,4 +16,5 @@ runs:
   using: "composite"
   steps:
     - shell: bash
-      run: echo "$INPUT_MESSAGE"
+      run: |
+        curl -s -XPOST -d $( echo "${{ inputs.message }}" | jq -Rs '{"msgtype": "m.text", "body":@text}' ) "https://matrix.org/_matrix/client/r0/rooms/%21${{ inputs.room }}/send/m.room.message?access_token=${{ inputs.token }}" > /dev/null

.github/workflows/push.yml

@@ -81,18 +81,18 @@ jobs:
         if: ${{ success() && github.repository == 'calamares/calamares' }}
         uses: ./.github/actions/notify-push
         with:
-          TOKEN: ${{ secrets.MATRIX_TOKEN }}
-          ROOM: ${{ secrets.MATRIX_ROOM }}
-          MESSAGE: |
+          token: ${{ secrets.MATRIX_TOKEN }}
+          room: ${{ secrets.MATRIX_ROOM }}
+          message: |
             OK ${{ github.workflow }} in ${{ github.repository }} by ${{ github.actor }} on ${{ github.event.ref }}
             .. ${{ steps.pre_build.outputs.message }}
       - name: "notify: fail"
         if: ${{ failure() && github.repository == 'calamares/calamares' }}
         uses: ./.github/actions/notify-push
         with:
-          TOKEN: ${{ secrets.MATRIX_TOKEN }}
-          ROOM: ${{ secrets.MATRIX_ROOM }}
-          MESSAGE: |
+          token: ${{ secrets.MATRIX_TOKEN }}
+          room: ${{ secrets.MATRIX_ROOM }}
+          message: |
             FAIL ${{ github.workflow }} in ${{ github.repository }} by ${{ github.actor }} on ${{ github.event.ref }}
               .. ${{ steps.pre_build.outputs.message }}
               .. ${{ github.event.compare }}