Update activerecord requirement from >= 5.2.0, < 7.0.0 to >= 5.2.0, <…

… 8.0.0

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/v7.0.2.3/activerecord/CHANGELOG.md)
- [Commits](rails/rails@v5.2.0...v7.0.2.3)

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

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

active_record_tweaks.gemspec

@@ -27,7 +27,7 @@ Gem::Specification.new do |s|
   s.executables   = `git ls-files -- bin/*`.split("\n").map { |f| File.basename(f) }
   s.require_paths = ["lib"]
 
-  s.add_dependency "activerecord", ">= 5.2.0", "< 7.0.0"
+  s.add_dependency "activerecord", ">= 5.2.0", "< 8.0.0"
 
   s.add_development_dependency "bundler", ">= 1.0.0"
   s.add_development_dependency "rake", ">= 10.0", "<= 14.0"