fix: update actions/upload-artifact to v7 for Node.js 24 compatibility (#80)

Author: watahani

.github/workflows/ci.yml

@@ -171,7 +171,7 @@ jobs:
           fail_ci_if_error: false
 
       - name: Upload coverage HTML report
-        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02  # v4
+        uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f  # v7
         if: always()
         with:
           name: coverage-report

.github/workflows/test.yml

@@ -158,7 +158,7 @@ jobs:
           fi
 
       - name: Upload security scan results
-        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02  # v4
+        uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f  # v7
         if: always()
         with:
           name: security-scan-results