Bump manifest to 1.0.28.0 for Store submission

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: aclinick

MSIXplainer/Package.appxmanifest

@@ -11,7 +11,7 @@
   <Identity
     Name="Clinick.msixplainer"
     Publisher="CN=46604BD4-AFD9-4B23-8EB3-10EAF66872A5"
-    Version="1.0.27.0" />
+    Version="1.0.28.0" />
 
   <mp:PhoneIdentity PhoneProductId="3a09e9f9-55b1-418a-9e63-9a662f1a29bc" PhonePublisherId="00000000-0000-0000-0000-000000000000"/>