Bump puma from 6.3.0 to 6.3.1 in /deploy/files/initial-placeholder

Bumps [puma](https://github.com/puma/puma) from 6.3.0 to 6.3.1.
- [Release notes](https://github.com/puma/puma/releases)
- [Changelog](https://github.com/puma/puma/blob/master/History.md)
- [Commits](https://github.com/puma/puma/compare/v6.3.0...v6.3.1)

---
updated-dependencies:
- dependency-name: puma
  dependency-type: direct:production
...

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

deploy/files/initial-placeholder/Gemfile.lock

@@ -2,7 +2,7 @@ GEM
   remote: https://rubygems.org/
   specs:
     nio4r (2.5.9)
-    puma (6.3.0)
+    puma (6.3.1)
       nio4r (~> 2.0)
 
 PLATFORMS