chore(deps): bump thin from 1.8.2 to 2.0.1 in /tests/apps/ruby

Bumps [thin](https://github.com/macournoyer/thin) from 1.8.2 to 2.0.1.
- [Release notes](https://github.com/macournoyer/thin/releases)
- [Changelog](https://github.com/macournoyer/thin/blob/master/CHANGELOG)
- [Commits](https://github.com/macournoyer/thin/compare/v1.8.2...v2.0.1)

---
updated-dependencies:
- dependency-name: thin
  dependency-version: 2.0.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

tests/apps/ruby/Gemfile.lock

@@ -4,9 +4,10 @@ GEM
     base64 (0.2.0)
     daemons (1.4.1)
     eventmachine (1.2.7)
+    logger (1.7.0)
     mustermann (3.0.0)
       ruby2_keywords (~> 0.0.1)
-    rack (2.2.14)
+    rack (2.2.17)
     rack-protection (3.2.0)
       base64 (>= 0.1.0)
       rack (~> 2.2, >= 2.2.4)
@@ -16,10 +17,11 @@ GEM
       rack (~> 2.2, >= 2.2.4)
       rack-protection (= 3.2.0)
       tilt (~> 2.0)
-    thin (1.8.2)
+    thin (2.0.1)
       daemons (~> 1.0, >= 1.0.9)
       eventmachine (~> 1.0, >= 1.0.4)
-      rack (>= 1, < 3)
+      logger
+      rack (>= 1, < 4)
     tilt (2.3.0)
 
 PLATFORMS