Custom shells for tests

I found out that GitHub actions uses the fast-fail
behaviour.  So that means that it's not advancing past
the first line of script that fails.  So, all my failure
handling logic is ineffective and not being executed.

This should fix that by disabling fast-fail on these two steps.

Author: craigfowler

.github/workflows/dotnetCi.yml

@@ -104,7 +104,7 @@ jobs:
         run: dotnet build -c ${{ env.Configuration }} --no-incremental
       - name: Run .NET tests with coverage
         id: dotnet_tests
-        continue-on-error: true
+        shell: bash {0}
         run: |
           for proj in Tests/*.Tests
           do
@@ -121,7 +121,7 @@ jobs:
           done
       - name: Run JavaScript tests with coverage
         id: js_tests
-        continue-on-error: true
+        shell: bash {0}
         run: |
           cd CSF.Screenplay.JsonToHtmlReport.Template/src
           npm test