Chore: Add min Grafana dependency version (#77272)

pkg/tests/api/plugins/data/expectedListResp.json

@@ -1618,7 +1618,7 @@
       "updated": ""
     },
     "dependencies": {
-      "grafanaDependency": "",
+      "grafanaDependency": ">=5.0.0",
       "grafanaVersion": "*",
       "plugins": []
     },

public/app/plugins/datasource/grafana-testdata-datasource/plugin.json

@@ -35,5 +35,9 @@
       "name": "Streaming Example",
       "path": "dashboards/streaming.json"
     }
-  ]
+  ],
+
+  "dependencies": {
+    "grafanaDependency": ">=5.0.0"
+  }
 }