[Gemspec] Bump molinillo to `'~> 0.5.1'`

Gemfile.lock

@@ -17,10 +17,10 @@ GIT
 
 GIT
   remote: https://github.com/CocoaPods/Molinillo.git
-  revision: d429ddf3daa7894990e2de99a75d2cc007b20598
+  revision: a1d1a7c9f2ffa8247c8e01b3861c519c8e36cdee
   branch: master
   specs:
-    molinillo (0.5.0)
+    molinillo (0.5.1)
 
 GIT
   remote: https://github.com/CocoaPods/Xcodeproj.git
@@ -109,7 +109,7 @@ PATH
       escape (~> 0.0.4)
       fourflusher (~> 1.0.1)
       gh_inspector (~> 1.0)
-      molinillo (~> 0.5.0)
+      molinillo (~> 0.5.1)
       nap (~> 1.0)
       xcodeproj (>= 1.3.1, < 2.0)
 

cocoapods.gemspec

@@ -37,7 +37,7 @@ Gem::Specification.new do |s|
   s.add_runtime_dependency 'cocoapods-stats',       '>= 1.0.0', '< 2.0'
   s.add_runtime_dependency 'cocoapods-trunk',       '>= 1.0.0', '< 2.0'
   s.add_runtime_dependency 'cocoapods-try',         '>= 1.1.0', '< 2.0'
-  s.add_runtime_dependency 'molinillo',             '~> 0.5.0'
+  s.add_runtime_dependency 'molinillo',             '~> 0.5.1'
   s.add_runtime_dependency 'xcodeproj',             '>= 1.3.1', '< 2.0'
 
   ## Version 5 needs Ruby 2.2, so we specify an upper bound to stay compatible with system ruby