Update Grafana dependencies to 8.0

package.json

@@ -30,10 +30,10 @@
     "@babel/preset-env": "7.7.7",
     "@babel/preset-react": "7.6.3",
     "@emotion/core": "10.0.27",
-    "@grafana/data": "^7.4.3",
+    "@grafana/data": "^8.0.6",
-    "@grafana/runtime": "^7.4.3",
+    "@grafana/runtime": "^8.0.6",
-    "@grafana/toolkit": "^7.4.3",
+    "@grafana/toolkit": "^8.0.6",
-    "@grafana/ui": "^7.4.3",
+    "@grafana/ui": "^8.0.6",
     "@popperjs/core": "2.4.0",
     "@types/classnames": "2.2.9",
     "@types/grafana": "github:CorpGlory/types-grafana",