chore(gha): bump actions/upload-artifact from 3 to 4

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 3 to 4.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v3...v4)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/deploy-documentation-pr.yml

@@ -21,7 +21,7 @@ jobs:
       - name: Build documentation
         uses: ./.github/actions/build-documentation
       - name: Upload
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: documentation-${{github.sha}}
           path: build/docs

.github/workflows/post-release-upload-demo-archive-and-trigger-companion-repositories-update.yml

@@ -21,7 +21,7 @@ jobs:
       - name: Set ARTIFACT_NAME
         run: echo "ARTIFACT_NAME=demo-${{github.sha}}" >> $GITHUB_ENV
       - name: Upload Demo
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ env.ARTIFACT_NAME }}
           path: LICENSE