bump v2.3.0

Author: samber

package.json

@@ -5,7 +5,7 @@
     "Samuel Berthe",
     "Frantisek Svoboda"
   ],
-  "version": "2.2.0",
+  "version": "2.3.0",
   "license": "MIT",
   "main": "dist/chartjs-plugin-datasource-prometheus.cjs.js",
   "module": "dist/chartjs-plugin-datasource-prometheus.esm.js",
@@ -65,4 +65,4 @@
     "timeseries",
     "tsdb"
   ]
-}
+}