Fix shell for tests

Author: tstellar

.github/workflows/release-binaries.yml

@@ -241,6 +241,7 @@ jobs:
       if: runner.os == 'Windows'
       run: |
         dotnet tool install --global wix
+
     - name: Configure
       id: build
       shell: bash
@@ -273,6 +274,7 @@ jobs:
     - name: Run Tests
       # These almost always fail so don't let them fail the build and prevent the uploads.
       continue-on-error: true
+      shell: bash
       run: |
         ninja -C ${{ steps.setup-stage.outputs.build-prefix }}/build stage2-check-all