Bump savon from 2.12.1 to 2.13.0

Bumps [savon](https://github.com/savonrb/savon) from 2.12.1 to 2.13.0.
- [Release notes](https://github.com/savonrb/savon/releases)
- [Changelog](https://github.com/savonrb/savon/blob/master/CHANGELOG.md)
- [Commits](https://github.com/savonrb/savon/compare/v2.12.1...v2.13.0)

---
updated-dependencies:
- dependency-name: savon
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Gemfile.lock

@@ -298,8 +298,9 @@ GEM
     graphql (1.12.14)
     groupdate (6.1.0)
       activesupport (>= 5.2)
-    gyoku (1.3.1)
+    gyoku (1.4.0)
       builder (>= 2.1.2)
+      rexml (~> 3.0)
     hashie (5.0.0)
     highline (2.0.3)
     html_tokenizer (0.0.7)
@@ -307,7 +308,7 @@ GEM
     httparty (0.18.1)
       mime-types (~> 3.0)
       multi_xml (>= 0.5.2)
-    httpi (2.4.5)
+    httpi (2.5.0)
       rack
       socksify
     i18n (1.12.0)
@@ -593,11 +594,12 @@ GEM
       sprockets (> 3.0)
       sprockets-rails
       tilt
-    savon (2.12.1)
+    savon (2.13.0)
       akami (~> 1.2)
       builder (>= 2.1.2)
       gyoku (~> 1.2)
-      httpi (~> 2.3)
+      httpi (>= 2.4.5)
+      mail (~> 2.5)
       nokogiri (>= 1.8.1)
       nori (~> 2.4)
       wasabi (~> 3.4)
@@ -674,7 +676,7 @@ GEM
       method_source (~> 1.0)
     warden (1.2.9)
       rack (>= 2.0.9)
-    wasabi (3.6.1)
+    wasabi (3.7.0)
       addressable
       httpi (~> 2.0)
       nokogiri (>= 1.4.2)
@@ -786,7 +788,7 @@ DEPENDENCIES
   rubocop-rspec (~> 2.4.0)
   rvm1-capistrano3 (~> 1.4.0)
   sassc-rails (~> 2.1.2)
-  savon (~> 2.12.1)
+  savon (~> 2.13.0)
   scss_lint (~> 0.59.0)
   selenium-webdriver (~> 3.142)
   sitemap_generator (~> 6.3.0)