Added upload artifacts

Author: seanlaw

.github/workflows/github-actions.yml

@@ -152,6 +152,13 @@ jobs:
       - name: Run Coverage Tests
         run: ./test.sh coverage
         shell: bash
+      - name: Upload Coverage Data to Github
+        uses: actions/upload-artifact@v4
+        with:
+          name: coverage-data-${{ matrix.os }}-${{ matrix.python-version }}
+          path: .coverage.*
+          include-hidden-files: true
+          if-no-files-found: ignore
       - name: Generate Coverage Report
         run: ./test.sh report coverage.stumpy.xml
         shell: bash