Release: 11.3.0 (#95196)

* Update changelog

* Update version to 11.3.0

* bump @grafana/plugin-configs from 11.3.0-pre to 11.3.0

* update changelog

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: Kevin Yu <kevinwcyu@users.noreply.github.com>
Co-authored-by: Kevin Minehart <kmineh0151@gmail.com>

e2e/test-plugins/grafana-extensionstest-app/package.json

@@ -12,7 +12,7 @@
   "license": "Apache-2.0",
   "devDependencies": {
     "@grafana/eslint-config": "7.0.0",
-    "@grafana/plugin-configs": "11.3.0-pre",
+    "@grafana/plugin-configs": "11.3.0",
     "@types/lodash": "4.17.7",
     "@types/node": "20.14.14",
     "@types/prismjs": "1.26.4",