Bump node-red-dashboard from 3.3.1 to 3.4.0

Bumps [node-red-dashboard](https://github.com/node-red/node-red-dashboard) from 3.3.1 to 3.4.0.
- [Release notes](https://github.com/node-red/node-red-dashboard/releases)
- [Changelog](https://github.com/node-red/node-red-dashboard/blob/master/CHANGELOG.md)
- [Commits](node-red/node-red-dashboard@3.3.1...3.4.0)

---
updated-dependencies:
- dependency-name: node-red-dashboard
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -17,7 +17,7 @@
     "node-red-contrib-sunevents": "3.1.1",
     "node-red-contrib-unit-converter": "0.0.3",
     "node-red-contrib-zigbee2mqtt": "2.7.1",
-    "node-red-dashboard": "3.3.1",
+    "node-red-dashboard": "3.4.0",
     "node-red-node-openweathermap": "0.5.1",
     "node-red-node-ui-table": "0.4.3",
     "node-red-node-wol": "0.2.0"