chore(deps): update dependency cocoapods to v1.15.0

Author: renovate-bot

example/Gemfile.lock

@@ -75,7 +75,7 @@ GEM
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
     json (2.7.1)
-    minitest (5.21.2)
+    minitest (5.22.0)
     molinillo (0.8.0)
     mutex_m (0.2.0)
     nanaimo (0.3.0)