Bump rswag-api from 2.8.0 to 2.9.0

Bumps [rswag-api](https://github.com/rswag/rswag) from 2.8.0 to 2.9.0.
- [Release notes](https://github.com/rswag/rswag/releases)
- [Changelog](https://github.com/rswag/rswag/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rswag/rswag/compare/2.8.0...2.9.0)

---
updated-dependencies:
- dependency-name: rswag-api
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Gemfile.lock

@@ -489,7 +489,7 @@ GEM
       nio4r (~> 2.0)
     raabro (1.4.0)
     racc (1.6.2)
-    rack (2.2.6.4)
+    rack (2.2.7)
     rack-mini-profiler (2.3.4)
       rack (>= 1.2.0)
     rack-oauth2 (1.21.3)
@@ -602,7 +602,7 @@ GEM
     rspec-retry (0.6.2)
       rspec-core (> 3.3)
     rspec-support (3.12.0)
-    rswag-api (2.8.0)
+    rswag-api (2.9.0)
       railties (>= 3.1, < 7.1)
     rswag-specs (2.8.0)
       activesupport (>= 3.1, < 7.1)