Release: Bump version to 8.4.0 (#45529)

* "Release: Updated versions in package to 8.4.0"

* update lockfile

Co-authored-by: Andrej Ocenas <mr.ocenas@gmail.com>

package.json

@@ -3,7 +3,7 @@
   "license": "AGPL-3.0-only",
   "private": true,
   "name": "grafana",
-  "version": "8.4.0-beta.1",
+  "version": "8.4.0",
   "repository": "github:grafana/grafana",
   "scripts": {
     "api-tests": "jest --notify --watch --config=devenv/e2e-api-tests/jest.js",