Bump syntax_tree from 6.1.0 to 6.1.1

Bumps [syntax_tree](https://github.com/kddnewton/syntax_tree) from 6.1.0 to 6.1.1.
- [Release notes](https://github.com/kddnewton/syntax_tree/releases)
- [Changelog](https://github.com/ruby-syntax-tree/syntax_tree/blob/main/CHANGELOG.md)
- [Commits](ruby-syntax-tree/syntax_tree@v6.1.0...v6.1.1)

---
updated-dependencies:
- dependency-name: syntax_tree
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Gemfile.lock

@@ -8,7 +8,7 @@ GEM
     rake (13.0.6)
     rexml (3.2.5)
     rouge (4.1.0)
-    syntax_tree (6.1.0)
+    syntax_tree (6.1.1)
       prettier_print (>= 1.2.0)
     test-unit (3.5.7)
       power_assert