chore(deps): bump andstor/file-existence-action from 1.1.0 to 2.0.0

Bumps [andstor/file-existence-action](https://github.com/andstor/file-existence-action) from 1.1.0 to 2.0.0.
- [Release notes](https://github.com/andstor/file-existence-action/releases)
- [Commits](andstor/file-existence-action@f023389...20b4d2e)

---
updated-dependencies:
- dependency-name: andstor/file-existence-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/go-unit-tests.yaml

@@ -99,7 +99,7 @@ jobs:
 
         - name: Check for .codecov.yaml
           id: codecov-enabled
-          uses: andstor/file-existence-action@f02338908d150e00a4b8bebc2dad18bd9e5229b0
+          uses: andstor/file-existence-action@20b4d2e596410855db8f9ca21e96fbe18e12930b
           with:
             files: .codecov.yaml