chore(deps): update dependency @grafana/eslint-config to v8

Author: renovate[bot]

package.json

@@ -26,7 +26,7 @@
   },
   "devDependencies": {
     "@babel/core": "^7.22.5",
-    "@grafana/eslint-config": "^7.0.0",
+    "@grafana/eslint-config": "^8.0.0",
     "@grafana/toolkit": "^10.0.0",
     "@grafana/tsconfig": "^2.0.0",
     "@swc/core": "^1.3.90",