Update GitHub workflows

Use the new (old?) name ci.yaml for push/merge queue/etc and do some
minor cleanup.

Signed-off-by: Leandro Lucarella <[email protected]>

Author: llucax

.github/workflows/ci-pr.yaml

@@ -1,6 +1,7 @@
 name: Test PR
 
-on: pull_request
+on:
+  pull_request:
 
 env:
   # Please make sure this version is included in the `matrix`, as the

.github/workflows/ci-push.yaml .github/workflows/ci.yaml.github/workflows/ci-push.yaml renamed to .github/workflows/ci.yaml

@@ -47,8 +47,6 @@ jobs:
       - name: Run nox
         uses: frequenz-floss/[email protected]
         with:
-          git-username: ${{ secrets.GIT_USER }}
-          git-password: ${{ secrets.GIT_PASS }}
           python-version: ${{ matrix.python }}
           nox-session: ${{ matrix.nox-session }}