sorbet: Update RBI files.

Autogenerated by the [sorbet](https://github.com/Homebrew/brew/blob/master/.github/workflows/sorbet.yml) workflow.

Library/Homebrew/sorbet/rbi/hidden-definitions/hidden.rbi

@@ -3596,6 +3596,7 @@ class Bundler::Retry
 end
 
 class Bundler::RubyGemsGemInstaller
+  def initialize(gem, options=T.unsafe(nil)); end
 end
 
 class Bundler::RubyGemsGemInstaller
@@ -8047,6 +8048,8 @@ end
 
 module Homebrew::Assertions
   include ::Minitest::Assertions
+  def assert_include(*args); end
+
   def assert_no_match(*args); end
 
   def assert_not_empty(*args); end
@@ -8057,12 +8060,16 @@ module Homebrew::Assertions
 
   def assert_not_in_epsilon(*args); end
 
+  def assert_not_include(*args); end
+
   def assert_not_includes(*args); end
 
   def assert_not_instance_of(*args); end
 
   def assert_not_kind_of(*args); end
 
+  def assert_not_match(*args); end
+
   def assert_not_nil(*args); end
 
   def assert_not_operator(*args); end
@@ -8073,7 +8080,13 @@ module Homebrew::Assertions
 
   def assert_not_same(*args); end
 
+  def assert_path_exist(*args); end
+
+  def assert_path_not_exist(*args); end
+
   def assert_raise(*args); end
+
+  def assert_throw(*args); end
 end
 
 class Homebrew::BundleVersion