Update @iobroker/testing requirement from ^5.0.4 to ^5.1.1 (#1975)

Author: dependabot[bot]

package.json

@@ -65,7 +65,7 @@
     "@iobroker/build-tools": "^2.0.15",
     "@iobroker/eslint-config": "^2.0.2",
     "@iobroker/plugin-sentry": "^2.0.4",
-    "@iobroker/testing": "^5.0.4",
+    "@iobroker/testing": "^5.1.1",
     "@iobroker/vis-2-widgets-react-dev": "^4.0.4",
     "@types/node-schedule": "^2.1.8",
     "@types/nodemailer": "^6.4.17",