chore(deps): update dependency cocoapods to v1.15.2

Author: renovate-bot

example/Gemfile.lock

@@ -64,8 +64,7 @@ GEM
     colored2 (3.1.2)
     concurrent-ruby (1.2.3)
     connection_pool (2.4.1)
-    drb (2.2.0)
-      ruby2_keywords
+    drb (2.2.1)
     escape (0.0.4)
     ethon (0.16.0)
       ffi (>= 1.15.0)
@@ -87,7 +86,6 @@ GEM
     public_suffix (4.0.7)
     rexml (3.2.6)
     ruby-macho (2.5.1)
-    ruby2_keywords (0.0.5)
     typhoeus (1.4.1)
       ethon (>= 0.9.0)
     tzinfo (2.0.6)