Merge pull request cloudfoundry#1707 from cloudfoundry/dependabot/bundler/docs/v3/mini_racer-0.2.15

build(deps): bump mini_racer from 0.2.9 to 0.2.15 in /docs/v3

Author: matt-royal

docs/v3/Gemfile.lock

@@ -87,8 +87,8 @@ GEM
       middleman-core (>= 3.2)
       rouge (~> 3.2)
     mini_portile2 (2.4.0)
-    mini_racer (0.2.9)
-      libv8 (>= 6.9.411)
+    mini_racer (0.2.15)
+      libv8 (> 7.3)
     minitest (5.14.0)
     nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)