GoogleUtilities 5.3.7 (#2258)

GoogleUtilities.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = 'GoogleUtilities'
-  s.version          = '5.3.6'
+  s.version          = '5.3.7'
   s.summary          = 'Google Utilities for iOS (plus community support for macOS and tvOS)'
 
   s.description      = <<-DESC

GoogleUtilities/CHANGELOG.md

@@ -1,6 +1,9 @@
 # Unreleased
+
+# 5.3.7
 - Fixed `pod lib lint GoogleUtilities.podspec --use-libraries` regression. (#2130)
 - Fixed macOS conditional check in UserDefaults. (#2245)
+- Migrate to clang-format 8.0.0. (#2222)
 
 # 5.3.6
 - Fix nullability issues. (#2079)