Bump puma from 5.5.0 to 5.6.2

Bumps [puma](https://github.com/puma/puma) from 5.5.0 to 5.6.2.
- [Release notes](https://github.com/puma/puma/releases)
- [Changelog](https://github.com/puma/puma/blob/master/History.md)
- [Commits](puma/puma@v5.5.0...v5.6.2)

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

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

Author: dependabot[bot]

Gemfile.lock

@@ -264,7 +264,7 @@ GEM
     net-ssh (5.2.0)
     net-ssh-gateway (2.0.0)
       net-ssh (>= 4.0.0)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     nokogiri (1.10.8)
       mini_portile2 (~> 2.4.0)
     nori (2.6.0)
@@ -290,7 +290,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (4.0.1)
-    puma (4.3.5)
+    puma (5.6.2)
       nio4r (~> 2.0)
     rack (1.6.12)
     rack-attack (6.2.1)