chore: update version to v6.1.0 (#1687)

* chore: update version to v6.1.0

* fix: version code

---------

Co-authored-by: Niraj Nandish <[email protected]>

Author: Sembauke

mobile-app/pubspec.yaml

@@ -1,7 +1,7 @@
 name: freecodecamp
 description: freecodecamp.org app.
 publish_to: none
-version: 6.0.1+60001
+version: 6.1.0+60100
 environment:
   sdk: ">=3.0.0 <4.0.0"
 dependencies: