Revert "chore: bump codecov/codecov-action from 3 to 4 (#6652)"

This reverts commit 63beaaa.

It appears to be no longer capable of finding git.

Author: code-asher

.github/workflows/build.yaml

@@ -195,7 +195,7 @@ jobs:
         run: yarn test:unit
 
       - name: Upload coverage report to Codecov
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@v3
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
         if: success()

.github/workflows/release.yaml

@@ -77,7 +77,7 @@ jobs:
         run: yarn test:integration
 
       - name: Upload coverage report to Codecov
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@v3
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
         if: success()