fix: coverage-combine

Author: shimakaze-git

.github/workflows/test.yml

@@ -76,22 +76,13 @@ jobs:
     needs:
       - test
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        python-version:
-          - "3.7"
-          - "3.8"
-          - "3.9"
-          - "3.10"
-          - "3.11"
-      fail-fast: false
 
     steps:
       - uses: actions/checkout@v4
 
       - uses: actions/setup-python@v4
         with:
-          python-version: ${{ matrix.python-version }}
+          python-version: '3.8'
 
       - name: Get coverage files
         uses: actions/download-artifact@v3