Bump actions/upload-artifact from 4 to 5 (cylc#2344) [skip ci]

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4 to 5.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4...v5)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/main.yml

@@ -44,7 +44,7 @@ jobs:
           yarn run coverage:unit
 
       - name: Upload coverage artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: coverage_unit
           path: coverage/clover.xml
@@ -101,14 +101,14 @@ jobs:
           browser: ${{ matrix.browser }}
 
       - name: Upload screenshots
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         if: failure()
         with:
           name: 'cypress-screenshots_${{ matrix.browser }}_${{ matrix.os }}'
           path: tests/e2e/screenshots
 
       - name: Upload coverage artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: 'coverage_${{ matrix.browser }}_${{ matrix.os }}'
           path: coverage/lcov.info