feat: bump actions/download-artifact from 4 to 5

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

---
updated-dependencies:
- dependency-name: actions/download-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/update.yml

@@ -129,14 +129,14 @@ jobs:
 
       # Download APK built from latest commit
       - name: Get apk built from latest
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           name: owncloudSigned-latest
           path: ./src/test/resources
 
       # Download APK built from current commit
       - name: Get apk built from current
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           name: owncloudSigned-${{ github.sha }}
           path: ./src/test/resources