build(deps): bump stringio from 3.0.8 to 3.0.9

Bumps [stringio](https://github.com/ruby/stringio) from 3.0.8 to 3.0.9.
- [Release notes](https://github.com/ruby/stringio/releases)
- [Changelog](https://github.com/ruby/stringio/blob/master/NEWS.md)
- [Commits](ruby/stringio@v3.0.8...v3.0.9)

---
updated-dependencies:
- dependency-name: stringio
  dependency-type: indirect
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Gemfile.lock

@@ -296,7 +296,7 @@ GEM
     smart_properties (1.17.0)
     sqlite3 (1.6.8)
       mini_portile2 (~> 2.8.0)
-    stringio (3.0.8)
+    stringio (3.0.9)
     thor (1.3.0)
     timeout (0.4.1)
     turbo-rails (1.5.0)