update appstream screenshots

Author: PhilippKosarev

data/io.github.philippkosarev.bmi.metainfo.xml.in

@@ -48,19 +48,19 @@
 
   <screenshots>
     <screenshot type="default">
-      <image>https://raw.githubusercontent.com/PhilippKosarev/bmi/46d5ab059ec5dcbf9295b4e17e96a2a544c7d0e6/screenshots/simple-dark.png</image>
+      <image>https://raw.githubusercontent.com/PhilippKosarev/bmi/b9a0e2ce78231c5bb008c7b9734cf2df001c2342/screenshots/simple-dark.png</image>
       <caption>BMI Basic Mode Dark Theme</caption>
     </screenshot>
     <screenshot>
-      <image>https://raw.githubusercontent.com/PhilippKosarev/bmi/46d5ab059ec5dcbf9295b4e17e96a2a544c7d0e6/screenshots/simple-light.png</image>
+      <image>https://raw.githubusercontent.com/PhilippKosarev/bmi/b9a0e2ce78231c5bb008c7b9734cf2df001c2342/screenshots/simple-light.png</image>
       <caption>BMI Basic Mode Light Theme</caption>
     </screenshot>
     <screenshot type="default">
-      <image>https://raw.githubusercontent.com/PhilippKosarev/bmi/46d5ab059ec5dcbf9295b4e17e96a2a544c7d0e6/screenshots/advanced-dark.png</image>
+      <image>https://raw.githubusercontent.com/PhilippKosarev/bmi/b9a0e2ce78231c5bb008c7b9734cf2df001c2342/screenshots/advanced-dark.png</image>
       <caption>BMI Advanced Mode Dark Theme</caption>
     </screenshot>
     <screenshot>
-      <image>https://raw.githubusercontent.com/PhilippKosarev/bmi/46d5ab059ec5dcbf9295b4e17e96a2a544c7d0e6/screenshots/advanced-light.png</image>
+      <image>https://raw.githubusercontent.com/PhilippKosarev/bmi/b9a0e2ce78231c5bb008c7b9734cf2df001c2342/screenshots/advanced-light.png</image>
       <caption>BMI Advanced Mode Light Theme</caption>
     </screenshot>
   </screenshots>