build(deps): bump codecov/codecov-action from 1 to 3 (#925)

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 1 to 3.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/master/CHANGELOG.md)
- [Commits](https://github.com/codecov/codecov-action/compare/v1...v3)

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

Signed-off-by: dependabot[bot] <support@github.com>

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

.github/workflows/tests.yml

@@ -55,7 +55,7 @@ jobs:
         PSQL_SSLMODE: disable
 
     - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v1
+      uses: codecov/codecov-action@v3
 
   backend-32bit:
     name: GoCryptoTrader back-end 32-bit with PSQL
@@ -114,7 +114,7 @@ jobs:
         CGO_ENABLED: 1
 
     - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v1
+      uses: codecov/codecov-action@v3
 
   frontend:
     name: GoCryptoTrader front-end