Merge pull request #356 from JuliaLinearAlgebra/dependabot/github_actions/codecov/codecov-action-4

Bump codecov/codecov-action from 3 to 4

Author: ViralBShah

.github/workflows/ci.yml

@@ -49,7 +49,7 @@ jobs:
       - uses: julia-actions/julia-buildpkg@v1
       - uses: julia-actions/julia-runtest@v1
       - uses: julia-actions/julia-processcoverage@v1
-      - uses: codecov/codecov-action@v3
+      - uses: codecov/codecov-action@v4
         with:
           file: ./lcov.info
           flags: unittests