Bump codecov/codecov-action from 5 to 7

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 5 to 7.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v5...v7)

---
updated-dependencies:
- dependency-name: codecov/codecov-action
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/CI.yml

@@ -59,7 +59,7 @@ jobs:
       - uses: julia-actions/julia-runtest@v1
       - uses: julia-actions/julia-processcoverage@v1
         if: matrix.coverage
-      - uses: codecov/codecov-action@v5
+      - uses: codecov/codecov-action@v7
         if: matrix.coverage
         with:
           token: ${{ secrets.CODECOV_TOKEN }}

.github/workflows/downstream.yml

@@ -67,7 +67,7 @@ jobs:
             exit(0)  # Exit immediately, as a success
           end
       - uses: julia-actions/julia-processcoverage@v1
-      - uses: codecov/codecov-action@v5
+      - uses: codecov/codecov-action@v7
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           files: lcov.info