Update activesupport requirement from ~> 6 to >= 6, < 8

Updates the requirements on [activesupport](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/v7.0.4.3/activesupport/CHANGELOG.md)
- [Commits](rails/rails@v6.1.7...v7.0.4.3)

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

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

Gemfile.lock

@@ -9,24 +9,23 @@ PATH
   remote: .
   specs:
     json_schema_form (0.12.0)
-      activesupport (~> 6)
+      activesupport (>= 6, < 8)
       dry-schema (~> 1.10)
       json_schemer (= 0.2.17)
       super_hash (>= 0.2.0)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (6.1.7)
+    activesupport (7.0.4.3)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 1.6, < 2)
       minitest (>= 5.1)
       tzinfo (~> 2.0)
-      zeitwerk (~> 2.3)
     ansi (1.5.0)
     builder (3.2.4)
     byebug (9.1.0)
-    concurrent-ruby (1.1.9)
+    concurrent-ruby (1.2.2)
     dry-configurable (0.13.0)
       concurrent-ruby (~> 1.0)
       dry-core (~> 0.6)
@@ -75,7 +74,6 @@ GEM
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     uri_template (0.7.0)
-    zeitwerk (2.6.7)
 
 PLATFORMS
   ruby

schema_form.gemspec

@@ -40,7 +40,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "minitest", ">= 5.14"
   spec.add_development_dependency "minitest-reporters", ">= 1.4"
   spec.add_development_dependency "byebug", "~> 9.1.0"
-  spec.add_dependency "activesupport", '~> 6'
+  spec.add_dependency "activesupport", '>= 6', '< 8'
   spec.add_dependency "super_hash", '>= 0.2.0'
   spec.add_dependency "dry-schema", "~> 1.10"
   spec.add_dependency "json_schemer", "0.2.17"