Update activerecord requirement from >= 5.2, < 7.1 to >= 5.2, < 7.2

Updates the requirements on [activerecord](https://github.com/rails/rails) to permit the latest version.
- [Release notes](https://github.com/rails/rails/releases)
- [Changelog](https://github.com/rails/rails/blob/v7.1.0/activerecord/CHANGELOG.md)
- [Commits](rails/rails@v5.2.0...v7.0.8)

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

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

acts_as_paranoid.gemspec

@@ -20,7 +20,7 @@ Gem::Specification.new do |spec|
   spec.files = File.read("Manifest.txt").split
   spec.require_paths = ["lib"]
 
-  spec.add_runtime_dependency "activerecord", ">= 5.2", "< 7.1"
+  spec.add_runtime_dependency "activerecord", ">= 5.2", "< 7.2"
   spec.add_runtime_dependency "activesupport", ">= 5.2", "< 7.1"
 
   spec.add_development_dependency "appraisal", "~> 2.3"