[Gemspec] Bump Xcodeproj to `'>= 1.4.4', '< 2.0'`

Gemfile.lock

@@ -31,12 +31,11 @@ GIT
 
 GIT
   remote: https://github.com/CocoaPods/Xcodeproj.git
-  revision: 9adec2958904f1db1f499c8f06513d29c4970bba
+  revision: 526f5128a23ca0f8702b9eab4fc1ff67873fab84
   branch: master
   specs:
-    xcodeproj (1.4.3)
+    xcodeproj (1.4.4)
       CFPropertyList (~> 2.3.3)
-      activesupport (>= 3)
       claide (>= 1.0.1, < 2.0)
       colored2 (~> 3.1)
       nanaimo (~> 0.2.3)
@@ -121,7 +120,7 @@ PATH
       molinillo (~> 0.5.7)
       nap (~> 1.0)
       ruby-macho (~> 1.1)
-      xcodeproj (>= 1.4.3, < 2.0)
+      xcodeproj (>= 1.4.4, < 2.0)
 
 GEM
   remote: https://rubygems.org/

cocoapods.gemspec

@@ -38,7 +38,7 @@ Gem::Specification.new do |s|
   s.add_runtime_dependency 'cocoapods-trunk',       '>= 1.1.2', '< 2.0'
   s.add_runtime_dependency 'cocoapods-try',         '>= 1.1.0', '< 2.0'
   s.add_runtime_dependency 'molinillo',             '~> 0.5.7'
-  s.add_runtime_dependency 'xcodeproj',             '>= 1.4.3', '< 2.0'
+  s.add_runtime_dependency 'xcodeproj',             '>= 1.4.4', '< 2.0'
 
   ## Version 5 needs Ruby 2.2, so we specify an upper bound to stay compatible with system ruby
   s.add_runtime_dependency 'activesupport', '>= 4.0.2', '< 5'