Merge branch 'candidate-7.12.x' into candidate-8.0.x

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>

.github/workflows/build-and-publish.yml

@@ -28,16 +28,3 @@ jobs:
           latest: 1   # this should only be set on the current minor branch
           build_ml: all  # build ml,gnn and gnn-gpu
 
-      - name: Notify on failure
-        uses: hpcc-systems/action-send-mail@v2
-        if: ${{ failure() }}
-        with:
-          server_address: smtp.gmail.com
-          server_port: 465
-          username: ${{secrets.GMAIL_USER}}
-          password: ${{secrets.GMAIL_PW}}
-          subject: Github Actions job result
-          body: Build job of ${{github.repository}} failed!
-          to: ${{secrets.GMAIL_RECIPIENTS}}
-          from: Github Actions
-