[dependabot]: Bump codecov/codecov-action from 4 to 5

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 4 to 5.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v4...v5)

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

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

.github/workflows/test.yml

@@ -90,7 +90,7 @@ jobs:
         run: tox run -f coverage
       - name: Upload (unit tests) coverage to codecov
         if: hashFiles('coverage.unit.xml') != ''  # Rudimentary `file.exists()`
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@v5
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           disable_search: true
@@ -100,7 +100,7 @@ jobs:
             test-unit
       - name: Upload (functional tests) coverage to codecov
         if: hashFiles('coverage.functional.xml') != ''  # Rudimentary `file.exists()`
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@v5
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           disable_search: true
@@ -146,7 +146,7 @@ jobs:
         run: ls -lA
       - name: Upload (unit tests) coverage to codecov
         if: hashFiles('coverage.unit.xml') != ''  # Rudimentary `file.exists()`
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@v5
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           disable_search: true
@@ -156,7 +156,7 @@ jobs:
             test-unit
       - name: Upload (functional tests) coverage to codecov
         if: hashFiles('coverage.functional.xml') != ''  # Rudimentary `file.exists()`
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@v5
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           disable_search: true