Bump codecov/codecov-action from 3.1.4 to 3.1.5 (#826)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/main.yml

@@ -51,7 +51,7 @@ jobs:
 
             - name: Upload coverage report
               if: ${{ matrix.platform.os == 'iOS' }}
-              uses: codecov/codecov-action@eaaf4bedf32dbdc6b720b63067d99c4d77d6047d
+              uses: codecov/codecov-action@4fe8c5f003fae66aa5ebb77cfd3e7bfbbda0b6b0
 
     test-package:
         name: Test Swift package using Xcode ${{ matrix.xcode }}