Bump activesupport from 7.2.1.1 to 8.0.0 in /steep

Bumps [activesupport](https://github.com/rails/rails) from 7.2.1.1 to 8.0.0.
- [Release notes](https://github.com/rails/rails/releases)
- [Changelog](https://github.com/rails/rails/blob/v8.0.0/activesupport/CHANGELOG.md)
- [Commits](rails/rails@v7.2.1.1...v8.0.0)

---
updated-dependencies:
- dependency-name: activesupport
  dependency-type: indirect
  update-type: version-update:semver-major
...

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

steep/Gemfile.lock

@@ -1,8 +1,9 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (7.2.1.1)
+    activesupport (8.0.0)
       base64
+      benchmark (>= 0.3)
       bigdecimal
       concurrent-ruby (~> 1.0, >= 1.3.1)
       connection_pool (>= 2.2.5)
@@ -12,8 +13,10 @@ GEM
       minitest (>= 5.1)
       securerandom (>= 0.3)
       tzinfo (~> 2.0, >= 2.0.5)
+      uri (>= 0.13.1)
     ast (2.4.2)
     base64 (0.2.0)
+    benchmark (0.4.0)
     bigdecimal (3.1.8)
     concurrent-ruby (1.3.4)
     connection_pool (2.4.1)
@@ -40,7 +43,7 @@ GEM
       ffi (~> 1.0)
     rbs (3.6.1)
       logger
-    securerandom (0.3.1)
+    securerandom (0.3.2)
     steep (1.8.1)
       activesupport (>= 5.1)
       concurrent-ruby (>= 1.1.10)
@@ -62,6 +65,7 @@ GEM
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     unicode-display_width (2.6.0)
+    uri (1.0.2)
 
 PLATFORMS
   ruby