chore(deps): bump test-unit from 3.7.0 to 3.7.1 in /gen (#3899)

Author: dependabot[bot]

gen/Gemfile.lock

@@ -5,9 +5,9 @@ GEM
     nokogiri (1.18.9)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
-    power_assert (2.0.5)
+    power_assert (3.0.0)
     racc (1.8.1)
-    test-unit (3.7.0)
+    test-unit (3.7.1)
       power_assert
     yaml (0.4.0)