chore(deps): bump rack

Bumps the bundler group with 1 update in the /tests/apps/ruby directory: [rack](https://github.com/rack/rack).


Updates `rack` from 3.2.6 to 3.2.8
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](https://github.com/rack/rack/compare/v3.2.6...v3.2.8)

---
updated-dependencies:
- dependency-name: rack
  dependency-version: 3.2.8
  dependency-type: indirect
  dependency-group: bundler
...

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

tests/apps/ruby/Gemfile.lock

@@ -7,7 +7,7 @@ GEM
     logger (1.7.0)
     mustermann (3.0.4)
       ruby2_keywords (~> 0.0.1)
-    rack (3.2.6)
+    rack (3.2.8)
     rack-protection (4.2.1)
       base64 (>= 0.1.0)
       logger (>= 1.6.0)
@@ -44,7 +44,7 @@ CHECKSUMS
   eventmachine (1.2.7) sha256=994016e42aa041477ba9cff45cbe50de2047f25dd418eba003e84f0d16560972
   logger (1.7.0) sha256=196edec7cc44b66cfb40f9755ce11b392f21f7967696af15d274dde7edff0203
   mustermann (3.0.4) sha256=85fadcb6b3c6493a8b511b42426f904b7f27b282835502233dd154daab13aa22
-  rack (3.2.6) sha256=5ed78e1f73b2e25679bec7d45ee2d4483cc4146eb1be0264fc4d94cb5ef212c2
+  rack (3.2.8) sha256=1fecc85e463ebc7a2a945fff829ffcd549babeb1556384796fad946c28dc4ec7
   rack-protection (4.2.1) sha256=cf6e2842df8c55f5e4d1a4be015e603e19e9bc3a7178bae58949ccbb58558bac
   rack-session (2.1.2) sha256=595434f8c0c3473ae7d7ac56ecda6cc6dfd9d37c0b2b5255330aa1576967ffe8
   ruby2_keywords (0.0.5) sha256=ffd13740c573b7301cf7a2e61fc857b2a8e3d3aff32545d6f8300d8bae10e3ef