Bump ancestry from 3.0.7 to 3.2.1

Bumps [ancestry](https://github.com/stefankroes/ancestry) from 3.0.7 to 3.2.1.
- [Release notes](https://github.com/stefankroes/ancestry/releases)
- [Changelog](https://github.com/stefankroes/ancestry/blob/master/CHANGELOG.md)
- [Commits](https://github.com/stefankroes/ancestry/compare/v3.0.7...v3.2.1)

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

Gemfile

@@ -6,7 +6,7 @@ gem "acts-as-taggable-on", "~> 6.5.0"
 gem "acts_as_votable", "~> 0.11.1"
 gem "ahoy_matey", "~> 1.6.0"
 gem "airbrake", "~> 5.0"
-gem "ancestry", "~> 3.0.7"
+gem "ancestry", "~> 3.2.1"
 gem "audited", "~> 4.9.0"
 gem "autoprefixer-rails", "~> 8.2.0"
 gem "cancancan", "~> 2.3.0"

Gemfile.lock

@@ -71,8 +71,8 @@ GEM
     akami (1.3.1)
       gyoku (>= 0.4.0)
       nokogiri
-    ancestry (3.0.7)
-      activerecord (>= 3.2.0)
+    ancestry (3.2.1)
+      activerecord (>= 4.2.0)
     arel (8.0.0)
     ast (2.4.1)
     audited (4.9.0)
@@ -633,7 +633,7 @@ DEPENDENCIES
   acts_as_votable (~> 0.11.1)
   ahoy_matey (~> 1.6.0)
   airbrake (~> 5.0)
-  ancestry (~> 3.0.7)
+  ancestry (~> 3.2.1)
   audited (~> 4.9.0)
   autoprefixer-rails (~> 8.2.0)
   bullet (~> 6.1.0)