Bump graphql from 2.1.5 to 2.1.6 in /spec/tester_mongo (#306)

Bumps [graphql](https://github.com/rmosolgo/graphql-ruby) from 2.1.5 to
2.1.6.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/rmosolgo/graphql-ruby/blob/master/CHANGELOG.md">graphql's
changelog</a>.</em></p>
<blockquote>
<h1>2.1.6 (2 Nov 2023)</h1>
<h3>Breaking Changes</h3>
<ul>
<li>The parser cache is now opt-in. Add
<code>config.graphql.parser_cache = true</code> to your Rails
environment setup to enable it. <a
href="https://redirect.github.com/rmosolgo/graphql-ruby/issues/4648">#4648</a></li>
</ul>
<h3>New features</h3>
<ul>
<li>New <code>ISO8601Duration</code> scalar <a
href="https://redirect.github.com/rmosolgo/graphql-ruby/issues/4688">#4688</a></li>
</ul>
<h3>Bug fixes</h3>
<ul>
<li>Trace: fix custom trace mode inheritance <a
href="https://redirect.github.com/rmosolgo/graphql-ruby/issues/4693">#4693</a></li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/rmosolgo/graphql-ruby/commit/a3a142a4df261bcdfda506166c063c92a6209525"><code>a3a142a</code></a>
2.1.6</li>
<li><a
href="https://github.com/rmosolgo/graphql-ruby/commit/6441c0fa7ed4cfcde81884d3bbb968a620b46218"><code>6441c0f</code></a>
Merge pull request <a
href="https://redirect.github.com/rmosolgo/graphql-ruby/issues/4693">#4693</a>
from rmosolgo/fix-custom-trace-with-default-base-class</li>
<li><a
href="https://github.com/rmosolgo/graphql-ruby/commit/c96d95a00fb6c319602192e7b6ba8f433c1e0efb"><code>c96d95a</code></a>
pro-1.24.10</li>
<li><a
href="https://github.com/rmosolgo/graphql-ruby/commit/f2387fb1e270e29d213ebaebfdd110122dae9499"><code>f2387fb</code></a>
Merge pull request <a
href="https://redirect.github.com/rmosolgo/graphql-ruby/issues/4648">#4648</a>
from gmcgibbon/cache</li>
<li><a
href="https://github.com/rmosolgo/graphql-ruby/commit/99a2faa2559014bc5ef4dd1eec70440a64befc8e"><code>99a2faa</code></a>
Fix custom trace mode using default base class</li>
<li><a
href="https://github.com/rmosolgo/graphql-ruby/commit/dfe9dd12155c7f87635cda9dc1384e7112a4606c"><code>dfe9dd1</code></a>
Make GraphQL parser cache opt-in</li>
<li><a
href="https://github.com/rmosolgo/graphql-ruby/commit/4fa1b8caa3a102715ad869d7f086289ae066e771"><code>4fa1b8c</code></a>
Merge pull request <a
href="https://redirect.github.com/rmosolgo/graphql-ruby/issues/4689">#4689</a>
from soartec-lab/task/add-doc-into-install-genrators</li>
<li><a
href="https://github.com/rmosolgo/graphql-ruby/commit/8fbf93f3fffc29c9a86f5065eae0fb66963417c6"><code>8fbf93f</code></a>
Merge pull request <a
href="https://redirect.github.com/rmosolgo/graphql-ruby/issues/4691">#4691</a>
from zavan/patch-1</li>
<li><a
href="https://github.com/rmosolgo/graphql-ruby/commit/0c7fad024c6c10c2b807f5e41fb36ad459ad255d"><code>0c7fad0</code></a>
Fix ActionCable subscriptions channel example</li>
<li><a
href="https://github.com/rmosolgo/graphql-ruby/commit/d11509c730876894403572798a239fd9d7714d72"><code>d11509c</code></a>
Add install generators options that were missing in the
documentation.</li>
<li>Additional commits viewable in <a
href="https://github.com/rmosolgo/graphql-ruby/compare/v2.1.5...v2.1.6">compare
view</a></li>
</ul>
</details>
<br />


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spec/tester_mongo/Gemfile

@@ -15,7 +15,7 @@ gem "mongoid"
 gem "puma", "~> 6.4"
 
 # Use graphql gem for handle API
-gem 'graphql', "~> 2.1.5"
+gem 'graphql', "~> 2.1.6"
 
 gem 'graphoid', path: "../../", require: 'graphoid/graphoid'
 

spec/tester_mongo/Gemfile.lock

@@ -106,7 +106,7 @@ GEM
     graphiql-rails (1.9.0)
       railties
       sprockets-rails
-    graphql (2.1.5)
+    graphql (2.1.6)
       racc (~> 1.4)
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
@@ -246,7 +246,7 @@ DEPENDENCIES
   debug
   graphiql-rails
   graphoid!
-  graphql (~> 2.1.5)
+  graphql (~> 2.1.6)
   mongoid
   pry-byebug
   puma (~> 6.4)