Update webmock requirement from ~> 3.23.1 to ~> 3.24.0

Updates the requirements on [webmock](https://github.com/bblimke/webmock) to permit the latest version.
- [Changelog](https://github.com/bblimke/webmock/blob/master/CHANGELOG.md)
- [Commits](bblimke/webmock@v3.23.1...v3.24.0)

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

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

wpscan.gemspec

@@ -40,5 +40,5 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'simplecov',           '~> 0.22.0'
   s.add_development_dependency 'simplecov-lcov',      '~> 0.8.0'
   s.add_development_dependency 'stackprof',           '~> 0.2.12'
-  s.add_development_dependency 'webmock',             '~> 3.23.1'
+  s.add_development_dependency 'webmock',             '~> 3.24.0'
 end