Merge pull request #41 from ruby-syntax-tree/dependabot/bundler/test-unit-3.7.3

Bump test-unit from 3.7.2 to 3.7.3

Author: github-actions[bot]

Gemfile.lock

@@ -17,7 +17,7 @@ GEM
     simplecov_json_formatter (0.1.4)
     syntax_tree (6.3.0)
       prettier_print (>= 1.2.0)
-    test-unit (3.7.2)
+    test-unit (3.7.3)
       power_assert
 
 PLATFORMS