Merge pull request #744 from cylc/dependabot/github_actions/actions/upload-artifact-5 [skip ci]

build(deps): bump actions/upload-artifact from 4 to 5

Author: dependabot[bot]

.github/workflows/test.yml

@@ -82,7 +82,7 @@ jobs:
           coverage report
 
       - name: Upload coverage artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: coverage_${{ matrix.os }}_py-${{ matrix.python-version }}
           path: coverage.xml