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

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]>

Author: dependabot[bot]

.github/workflows/e2e-tests.yml

@@ -78,7 +78,7 @@ jobs:
 
       - name: 📊 Upload test results
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: playwright-report-${{ matrix.browser }}
           path: |
@@ -88,7 +88,7 @@ jobs:
 
       - name: 📸 Upload screenshots
         if: failure()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: screenshots-${{ matrix.browser }}
           path: test-results/screenshots/
@@ -142,7 +142,7 @@ jobs:
 
       - name: 📊 Upload mobile test results
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: playwright-report-mobile
           path: |
@@ -199,7 +199,7 @@ jobs:
 
       - name: 🖼️ Upload visual diffs
         if: failure()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: visual-diffs
           path: test-results/visual-diffs/

.github/workflows/frontend-tests.yml

@@ -77,7 +77,7 @@ jobs:
 
       - name: 📋 Upload test results
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: test-results-node-${{ matrix.node-version }}
           path: |
@@ -206,7 +206,7 @@ jobs:
         continue-on-error: true
 
       - name: 📤 Upload built site
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: built-site
           path: _site/