Bump puma from 5.5.2 to 5.6.4

Bumps [puma](https://github.com/puma/puma) from 5.5.2 to 5.6.4.
- [Release notes](https://github.com/puma/puma/releases)
- [Changelog](https://github.com/puma/puma/blob/master/History.md)
- [Commits](puma/puma@v5.5.2...v5.6.4)

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

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

Gemfile.lock

@@ -70,9 +70,12 @@ GEM
     mustermann (1.1.1)
       ruby2_keywords (~> 0.0.1)
     net-ldap (0.17.0)
+    nio4r (2.5.8)
     nio4r (2.5.8-java)
     nokogiri (1.12.5-java)
       racc (~> 1.4)
+    nokogiri (1.12.5-x86_64-linux)
+      racc (~> 1.4)
     opentelemetry-api (1.0.1)
     opentelemetry-common (0.19.3)
       opentelemetry-api (~> 1.0)
@@ -113,12 +116,18 @@ GEM
       ast (~> 2.4.1)
     pickup (0.0.11)
     prometheus-client (2.1.0)
+    pry (0.14.1)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
     pry (0.14.1-java)
       coderay (~> 1.1)
       method_source (~> 1.0)
       spoon (~> 0.0)
-    puma (5.5.2-java)
+    puma (5.6.4)
+      nio4r (~> 2.0)
+    puma (5.6.4-java)
       nio4r (~> 2.0)
+    racc (1.6.0)
     racc (1.6.0-java)
     rack (2.2.3)
     rack-protection (2.1.0)
@@ -182,6 +191,7 @@ GEM
 
 PLATFORMS
   universal-java-1.8
+  x86_64-linux
 
 DEPENDENCIES
   climate_control (>= 0.2.0)