Update flatpak release file

Author: uglide

src/resources/flatpak/app.resp.RESP.metainfo.xml

@@ -19,6 +19,8 @@
     </screenshots>
     <content_rating type="oars-1.0"/>
     <releases>
+        <release version="2022.4" date="2022-06-15"/>
+        <release version="2022.3" date="2022-05-04"/>
         <release version="2022.2.1" date="2022-04-11"/>
         <release version="2022.2" date="2022-02-23"/>
         <release version="2022.1.1" date="2022-02-18"/>