Add deletes since windows gets mad

Author: tmthecoder

.github/workflows/dargon2_tests.yml

@@ -20,6 +20,8 @@ jobs:
     - uses: dart-lang/setup-dart@v1
     - name: Use Test Pubspec Files
       run: |
+        rm pubspec.yaml
+        rm ../dargon2_core/pubspec.yaml
         mv pubspec.test.yaml pubspec.yaml
         mv ../dargon2_core/pubspec.test.yaml ../dargon2_core/pubspec.yaml
     - name: Install dependencies