Chore: Update packages version to 8.2.0-pre (#38635)

* chore(packages): run packages:prepare script

* chore: update package.json version

* chore: put back semver compliant version

package.json

@@ -3,7 +3,7 @@
   "license": "AGPL-3.0-only",
   "private": true,
   "name": "grafana",
-  "version": "8.1.0-pre",
+  "version": "8.2.0-pre.0",
   "repository": "github:grafana/grafana",
   "scripts": {
     "api-tests": "jest --notify --watch --config=devenv/e2e-api-tests/jest.js",