Re-add StatsD support through the nsa gem (#26310)

Gemfile.lock

@@ -7,6 +7,17 @@ GIT
       hkdf (~> 0.2)
       jwt (~> 2.0)
 
+GIT
+  remote: https://github.com/jhawthorn/nsa.git
+  revision: e020fcc3a54d993ab45b7194d89ab720296c111b
+  ref: e020fcc3a54d993ab45b7194d89ab720296c111b
+  specs:
+    nsa (0.2.8)
+      activesupport (>= 4.2, < 7.2)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      sidekiq (>= 3.5)
+      statsd-ruby (~> 1.4, >= 1.4.0)
+
 GIT
   remote: https://github.com/mastodon/rails-settings-cached.git
   revision: 86328ef0bd04ce21cc0504ff5e334591e8c2ccab
@@ -706,6 +717,7 @@ GEM
       net-scp (>= 1.1.2)
       net-ssh (>= 2.8.0)
     stackprof (0.2.25)
+    statsd-ruby (1.5.0)
     stoplight (3.0.1)
       redlock (~> 1.0)
     strong_migrations (0.8.0)
@@ -857,6 +869,7 @@ DEPENDENCIES
   net-http (~> 0.3.2)
   net-ldap (~> 0.18)
   nokogiri (~> 1.15)
+  nsa!
   oj (~> 3.14)
   omniauth (~> 1.9)
   omniauth-cas (~> 2.0)