Bump jbuilder from 2.3.1 to 2.9.1

Bumps [jbuilder](https://github.com/rails/jbuilder) from 2.3.1 to 2.9.1.
- [Release notes](https://github.com/rails/jbuilder/releases)
- [Changelog](https://github.com/rails/jbuilder/blob/master/CHANGELOG.md)
- [Commits](rails/jbuilder@v2.3.1...v2.9.1)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Gemfile

@@ -19,7 +19,7 @@ gem 'jquery-rails'
 # Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
 gem 'turbolinks'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
-gem 'jbuilder', '~> 2.0'
+gem 'jbuilder', '~> 2.9'
 # bundle exec rake doc:rails generates the API under doc/api.
 gem 'sdoc', '~> 0.4.0', group: :doc
 

Gemfile.lock

@@ -130,9 +130,8 @@ GEM
       activerecord (>= 4.2.0, < 4.3)
     i18n (0.9.5)
       concurrent-ruby (~> 1.0)
-    jbuilder (2.3.1)
-      activesupport (>= 3.0.0, < 5)
-      multi_json (~> 1.2)
+    jbuilder (2.9.1)
+      activesupport (>= 4.2.0)
     jquery-rails (4.0.5)
       rails-dom-testing (~> 1.0)
       railties (>= 4.2.0)
@@ -147,8 +146,8 @@ GEM
       mime-types (>= 1.16, < 3)
     mime-types (2.6.1)
     mini_portile2 (2.4.0)
-    minitest (5.11.3)
-    multi_json (1.11.2)
+    minitest (5.13.0)
+    multi_json (1.14.1)
     nokogiri (1.10.5)
       mini_portile2 (~> 2.4.0)
     pg (0.18.3)
@@ -237,7 +236,7 @@ PLATFORMS
 DEPENDENCIES
   byebug
   coffee-rails (~> 4.1.0)
-  jbuilder (~> 2.0)
+  jbuilder (~> 2.9)
   jquery-rails
   pg
   rails (= 4.2.4)