fix(fastlane): Git checkout Gemfile.lock

Author: robertmogos

fastlane/Fastfile

@@ -31,7 +31,7 @@ platform :android do
     puts "New version: #{version_number}"
 
     # Ensure branch is master & WC clean, then pull changes
-    sh("git checkout Gemfile.lock") # Ignore different bundle version changing Gemfile https://discuss.bitrise.io/t/5176/5
+    sh("git checkout ../Gemfile.lock") # Ignore different bundle version changing Gemfile https://discuss.bitrise.io/t/5176/5
     prepare_git()
 
     # Generate changelog updates