Update CI test configurations

- Limit test-results step to 1 min in case a test hangs without
  generating a tapfile, as `make test-results` may re-run it.
- Limit Appveyor tests to 20 mins.
- Always run `make test-results` on GHA.

.github/workflows/ci-scripts-build.yml

@@ -171,4 +171,5 @@ jobs:
         name: tapfiles ${{ matrix.name }}
         path: '**/O.*/*.tap'
     - name: Collect and show test results
-      run: python .ci/cue.py test-results
+      if: ${{ always() }}
+      run: python .ci/cue.py -T 1M test-results