Bump codecov/codecov-action from 3.1.1 to 3.1.3

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 3.1.1 to 3.1.3.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@d9f34f8...894ff02)

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

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

.github/workflows/ci-build.yml

@@ -66,7 +66,7 @@ jobs:
         run: nox -p ${{ matrix.python-version }} -s unit_tests -- --cov=datagateway_api --cov-report=xml
       - name: Upload unit test code coverage report
         if: matrix.python-version == '3.6'
-        uses: codecov/codecov-action@d9f34f8cd5cb3b3eb79b3e4b5dae3a16df499a70 # v3.1.1
+        uses: codecov/codecov-action@894ff025c7b54547a9a2a1e9f228beae737ad3c2 # v3.1.3
 
       # ICAT Ansible clone and install dependencies
       - name: Checkout icat-ansible
@@ -152,7 +152,7 @@ jobs:
         run: nox -p ${{ matrix.python-version }} -s integration_tests -- --cov=datagateway_api --cov-report=xml
       - name: Upload integration test code coverage report
         if: matrix.python-version == '3.6'
-        uses: codecov/codecov-action@d9f34f8cd5cb3b3eb79b3e4b5dae3a16df499a70 # v3.1.1
+        uses: codecov/codecov-action@894ff025c7b54547a9a2a1e9f228beae737ad3c2 # v3.1.3
 
   linting:
     runs-on: ubuntu-20.04