Merge pull request #246 from ruby-syntax-tree/dependabot/bundler/syntax_tree-6.3.0

Bump syntax_tree from 6.2.0 to 6.3.0

Author: github-actions[bot]

Gemfile.lock

@@ -8,7 +8,7 @@ GEM
     rake (13.3.0)
     rexml (3.3.9)
     rouge (4.5.2)
-    syntax_tree (6.2.0)
+    syntax_tree (6.3.0)
       prettier_print (>= 1.2.0)
     test-unit (3.7.0)
       power_assert