ci: optimize workflows

Author: sean2077

.github/workflows/ci.yml

@@ -33,10 +33,9 @@ jobs:
         run: uv run ruff check .
 
   test:
-    runs-on: ${{ matrix.os }}
+    runs-on: ubuntu-latest
     strategy:
       matrix:
-        os: [ubuntu-latest, windows-latest, macos-latest]
         python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
     steps:
       - name: Checkout code
@@ -59,7 +58,7 @@ jobs:
         run: uv run pytest -v --cov=jsonpath --cov-report=xml
 
       - name: Upload coverage
-        if: matrix.os == 'ubuntu-latest' && matrix.python-version == '3.12'
+        if: matrix.python-version == '3.12'
         uses: codecov/codecov-action@v5
         with:
           file: ./coverage.xml