use release version of cosmic-ray

Author: tomato42

.github/workflows/ci.yml

@@ -264,7 +264,7 @@ jobs:
       - name: Install mutation testing dependencies
         if: ${{ matrix.mutation == 'true' }}
         run: |
-          pip install https://github.com/sixty-north/cosmic-ray/archive/master.zip
+          pip install cosmic-ray
           pip install pytest-timeout
       - name: Display installed python package versions
         run: pip list
@@ -415,7 +415,7 @@ jobs:
           key: sessions-${{ github.sha }}
       - name: Install cosmic-ray
         run: |
-          pip3 install https://github.com/sixty-north/cosmic-ray/archive/master.zip
+          pip3 install cosmic-ray
           pip install pytest-timeout
       - name: Install dependencies
         run: |
@@ -491,7 +491,7 @@ jobs:
       - name: Install build dependencies
         run: |
           pip install -r build-requirements.txt
-          pip install https://github.com/sixty-north/cosmic-ray/archive/master.zip
+          pip install cosmic-ray
           pip install pytest-timeout
       - name: Run mutation testing
         run: |
@@ -643,7 +643,7 @@ jobs:
           key: sessions-${{ github.sha }}-19-done
       - name: Install cosmic-ray
         run: |
-          pip3 install https://github.com/sixty-north/cosmic-ray/archive/master.zip
+          pip3 install cosmic-ray
           pip install pytest-timeout
       - name: Install dependencies
         run: |