fix action

Author: Richardk2n

.github/workflows/python-package.yml

@@ -10,6 +10,10 @@ on:
     branches: [ master ]
 
 jobs:
+  defaults:
+    run:
+      shell: bash
+
   testCode:
 
     strategy:
@@ -28,8 +32,7 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install flake8 pytest
-    - if: ${{ matrix.os == ubuntu-latest }}
-      run: if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
     - name: Lint with flake8
       run: |
         # stop the build if there are Python syntax errors or undefined names