gh-actions: bump codecov/codecov-action from 5 to 6 (#1942)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Muhammed Shuaibi <45150244+mshuaibii@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/test.yml

@@ -106,7 +106,7 @@ jobs:
 
       - if: ${{ matrix.python_version == '3.13' }}
         name: codecov-coverage
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@v6
         with:
           fail_ci_if_error: false
           files: ./coverage.xml,./gpu-coverage.xml