chore: remove experimental from Nest.JS SDK (#1016)

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## This PR
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As discussed, I propose to remove the experimental from the Nest.JS SDK.
It is used in several orgs and the API works well there.

Signed-off-by: Lukas Reining <[email protected]>

Author: lukas-reining

release-please-config.json

@@ -37,7 +37,8 @@
     },
     "packages/nest": {
       "release-type": "node",
-      "prerelease": true,
+      "release-as": "0.2.2",
+      "prerelease": false,
       "bump-minor-pre-major": true,
       "bump-patch-for-minor-pre-major": true,
       "extra-files": ["README.md"],