chore: bump version to 1.3.4 for release (#714)

Author: umireon

buildspec.json

@@ -38,7 +38,7 @@
   },
   "name": "obs-backgroundremoval",
   "displayName": "OBS Background Removal",
-  "version": "1.3.3",
+  "version": "1.3.4",
   "author": "Roy Shilkrot",
   "website": "https://royshil.github.io/obs-backgroundremoval/",
   "email": "[email protected]"