Bump httparty from 0.20.0 to 0.21.0 in /system-validation-test

Bumps [httparty](https://github.com/jnunemaker/httparty) from 0.20.0 to 0.21.0.
- [Release notes](https://github.com/jnunemaker/httparty/releases)
- [Changelog](https://github.com/jnunemaker/httparty/blob/master/Changelog.md)
- [Commits](jnunemaker/httparty@v0.20.0...v0.21.0)

---
updated-dependencies:
- dependency-name: httparty
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

system-validation-test/Gemfile.lock

@@ -28,18 +28,21 @@ GEM
     cucumber-tag-expressions (4.1.0)
     diff-lcs (1.5.0)
     ffi (1.15.5)
-    httparty (0.20.0)
-      mime-types (~> 3.0)
+    httparty (0.21.0)
+      mini_mime (>= 1.0.0)
       multi_xml (>= 0.5.2)
     jsonpath (1.1.2)
       multi_json
     mime-types (3.4.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2022.0105)
+    mini_mime (1.1.2)
     multi_json (1.15.0)
     multi_test (1.1.0)
     multi_xml (0.6.0)
-    nokogiri (1.13.10)
+    nokogiri (1.13.10-arm64-darwin)
+      racc (~> 1.4)
+    nokogiri (1.13.10-x86_64-linux)
       racc (~> 1.4)
     racc (1.6.1)
     rspec (3.12.0)
@@ -60,6 +63,7 @@ GEM
 
 PLATFORMS
   arm64-darwin-21
+  x86_64-linux
 
 DEPENDENCIES
   cucumber