Bump codecov/codecov-action from 1.x to 2.x (#723)

Author: dependabot[bot]

.github/workflows/sauce.yml

@@ -26,6 +26,6 @@ jobs:
       - name: Coverage
         run: npm run coverage
       - name: Codecov
-        uses: codecov/codecov-action@v1
+        uses: codecov/codecov-action@v2
         with:
           file: coverage/lcov.info

.github/workflows/test.yml

@@ -21,6 +21,6 @@ jobs:
       - name: Coverage
         run: npm run coverage
       - name: Codecov
-        uses: codecov/codecov-action@v1
+        uses: codecov/codecov-action@v2
         with:
           file: coverage/lcov.info