chore: bump version to 2.3.0 across all bump targets

newtab.html

@@ -241,7 +241,7 @@
     <div class="panel-footer">
       <div class="about-block">
         <div class="about-logo" data-i18n="about.title">⬡ HELLION NEWTAB</div>
-        <div class="about-version">Version 2.2.0 · by Hellion Online Media</div>
+        <div class="about-version">Version 2.3.0 · by Hellion Online Media</div>
 
         <div class="about-links">
           <a href="https://hellion-media.de/impressum" target="_blank" class="about-link">