Chore(deps): 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] <support@github.com>

.github/workflows/appbuild.yml

@@ -37,7 +37,7 @@ jobs:
         uname -a
         RUST_BACKTRACE=1 krankerl --version
         RUST_BACKTRACE=1 krankerl package
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
         name: Deck app tarball
         path: build/artifacts/deck.tar.gz

.github/workflows/cypress.yml

@@ -106,15 +106,15 @@ jobs:
           npm_package_name: ${{ env.APP_NAME }}
 
       - name: Upload test failure screenshots
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: failure()
         with:
           name: Upload screenshots
           path: apps/${{ env.APP_NAME }}/cypress/screenshots/
           retention-days: 5
 
       - name: Upload nextcloud logs
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: failure()
         with:
           name: Upload nextcloud log