Update CocoaPods.

Gemfile

@@ -1,6 +1,6 @@
 source 'https://rubygems.org'
 
-gem 'cocoapods', '1.8.0.beta.2'
+gem 'cocoapods'
 gem 'xcpretty'
 
 # Danger

Gemfile.lock

@@ -23,10 +23,10 @@ GEM
       nap
       open4 (~> 1.3)
     clamp (1.3.1)
-    cocoapods (1.8.0.beta.2)
+    cocoapods (1.9.1)
       activesupport (>= 4.0.2, < 5)
       claide (>= 1.0.2, < 2.0)
-      cocoapods-core (= 1.8.0.beta.2)
+      cocoapods-core (= 1.9.1)
       cocoapods-deintegrate (>= 1.0.3, < 2.0)
       cocoapods-downloader (>= 1.2.2, < 2.0)
       cocoapods-plugins (>= 1.0.0, < 2.0)
@@ -41,13 +41,15 @@ GEM
       molinillo (~> 0.6.6)
       nap (~> 1.0)
       ruby-macho (~> 1.4)
-      xcodeproj (>= 1.11.1, < 2.0)
-    cocoapods-core (1.8.0.beta.2)
+      xcodeproj (>= 1.14.0, < 2.0)
+    cocoapods-core (1.9.1)
       activesupport (>= 4.0.2, < 6)
       algoliasearch (~> 1.0)
-      concurrent-ruby (~> 1.0)
+      concurrent-ruby (~> 1.1)
       fuzzy_match (~> 2.0.4)
       nap (~> 1.0)
+      netrc (~> 0.11)
+      typhoeus (~> 1.0)
     cocoapods-deintegrate (1.0.4)
     cocoapods-downloader (1.3.0)
     cocoapods-plugins (1.0.0)
@@ -62,7 +64,7 @@ GEM
     colored2 (3.1.2)
     commander-fastlane (4.4.6)
       highline (~> 1.7.2)
-    concurrent-ruby (1.1.5)
+    concurrent-ruby (1.1.6)
     cork (0.3.0)
       colored2 (~> 3.1)
     danger (6.2.0)
@@ -96,6 +98,8 @@ GEM
     dotenv (2.7.5)
     emoji_regex (1.0.1)
     escape (0.0.4)
+    ethon (0.12.0)
+      ffi (>= 1.3.0)
     excon (0.72.0)
     faraday (0.17.3)
       multipart-post (>= 1.2, < 3)
@@ -144,6 +148,7 @@ GEM
       xcodeproj (>= 1.13.0, < 2.0.0)
       xcpretty (~> 0.3.0)
       xcpretty-travis-formatter (>= 0.0.3)
+    ffi (1.12.2)
     fourflusher (2.3.1)
     fuzzy_match (2.0.4)
     gh_inspector (1.1.3)
@@ -248,15 +253,17 @@ GEM
     tty-screen (0.7.0)
     tty-spinner (0.9.3)
       tty-cursor (~> 0.7)
-    tzinfo (1.2.6)
+    typhoeus (1.3.1)
+      ethon (>= 0.9.0)
+    tzinfo (1.2.7)
       thread_safe (~> 0.1)
     uber (0.1.0)
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.7.6)
     unicode-display_width (1.6.1)
     word_wrap (1.0.0)
-    xcodeproj (1.14.0)
+    xcodeproj (1.16.0)
       CFPropertyList (>= 2.3.3, < 4.0)
       atomos (~> 0.1.3)
       claide (>= 1.0.2, < 2.0)
@@ -280,7 +287,7 @@ PLATFORMS
 
 DEPENDENCIES
   circleci_artifact
-  cocoapods (= 1.8.0.beta.2)
+  cocoapods
   danger
   danger-junit
   danger-swiftlint