use action v3

Author: msimerson

.github/workflows/coverage.yml

@@ -20,7 +20,7 @@ jobs:
       - name: run coverage
         run: npx -y c8 --reporter=lcov npm test
       - name: codecov
-        uses: codecov/codecov-action@v2
+        uses: codecov/codecov-action@v3
       - name: Coveralls
         uses: coverallsapp/github-action@master
         with: