Use bash in windows CI to allow failfast (#2178)

Author: davfsa

.github/workflows/ci.yml

@@ -31,6 +31,7 @@ jobs:
           python-version: ${{ matrix.python-version }}
 
       - name: Test Installation
+        shell: bash
         run: |
           pip install -r dev-requirements/build.txt
 
@@ -41,8 +42,10 @@ jobs:
           pip uninstall -y hikari
 
       - name: Run tests
+        shell: bash
         run: |
           pip install -r dev-requirements.txt
+
           nox -s pytest
           nox -s pytest-all-features -- --cov-append