Add CVE note to security guide and gemspecs

[ci skip]

actioncable/actioncable.gemspec

@@ -2,6 +2,9 @@
 
 version = File.read(File.expand_path("../RAILS_VERSION", __dir__)).strip
 
+# NOTE: There's no need to update dependencies for CVEs in minor
+# releases when users can simply run `bundle update vulnerable_gem`.
+
 Gem::Specification.new do |s|
   s.platform    = Gem::Platform::RUBY
   s.name        = "actioncable"

actionmailer/actionmailer.gemspec

@@ -2,6 +2,9 @@
 
 version = File.read(File.expand_path("../RAILS_VERSION", __dir__)).strip
 
+# NOTE: There's no need to update dependencies for CVEs in minor
+# releases when users can simply run `bundle update vulnerable_gem`.
+
 Gem::Specification.new do |s|
   s.platform    = Gem::Platform::RUBY
   s.name        = "actionmailer"

actionpack/actionpack.gemspec

@@ -2,6 +2,9 @@
 
 version = File.read(File.expand_path("../RAILS_VERSION", __dir__)).strip
 
+# NOTE: There's no need to update dependencies for CVEs in minor
+# releases when users can simply run `bundle update vulnerable_gem`.
+
 Gem::Specification.new do |s|
   s.platform    = Gem::Platform::RUBY
   s.name        = "actionpack"

actionview/actionview.gemspec

@@ -2,6 +2,9 @@
 
 version = File.read(File.expand_path("../RAILS_VERSION", __dir__)).strip
 
+# NOTE: There's no need to update dependencies for CVEs in minor
+# releases when users can simply run `bundle update vulnerable_gem`.
+
 Gem::Specification.new do |s|
   s.platform    = Gem::Platform::RUBY
   s.name        = "actionview"

activejob/activejob.gemspec

@@ -2,6 +2,9 @@
 
 version = File.read(File.expand_path("../RAILS_VERSION", __dir__)).strip
 
+# NOTE: There's no need to update dependencies for CVEs in minor
+# releases when users can simply run `bundle update vulnerable_gem`.
+
 Gem::Specification.new do |s|
   s.platform    = Gem::Platform::RUBY
   s.name        = "activejob"

activemodel/activemodel.gemspec

@@ -2,6 +2,9 @@
 
 version = File.read(File.expand_path("../RAILS_VERSION", __dir__)).strip
 
+# NOTE: There's no need to update dependencies for CVEs in minor
+# releases when users can simply run `bundle update vulnerable_gem`.
+
 Gem::Specification.new do |s|
   s.platform    = Gem::Platform::RUBY
   s.name        = "activemodel"

activerecord/activerecord.gemspec

@@ -2,6 +2,9 @@
 
 version = File.read(File.expand_path("../RAILS_VERSION", __dir__)).strip
 
+# NOTE: There's no need to update dependencies for CVEs in minor
+# releases when users can simply run `bundle update vulnerable_gem`.
+
 Gem::Specification.new do |s|
   s.platform    = Gem::Platform::RUBY
   s.name        = "activerecord"

activestorage/activestorage.gemspec

@@ -2,6 +2,9 @@
 
 version = File.read(File.expand_path("../RAILS_VERSION", __dir__)).strip
 
+# NOTE: There's no need to update dependencies for CVEs in minor
+# releases when users can simply run `bundle update vulnerable_gem`.
+
 Gem::Specification.new do |s|
   s.platform    = Gem::Platform::RUBY
   s.name        = "activestorage"

activesupport/activesupport.gemspec

@@ -2,6 +2,9 @@
 
 version = File.read(File.expand_path("../RAILS_VERSION", __dir__)).strip
 
+# NOTE: There's no need to update dependencies for CVEs in minor
+# releases when users can simply run `bundle update vulnerable_gem`.
+
 Gem::Specification.new do |s|
   s.platform    = Gem::Platform::RUBY
   s.name        = "activesupport"

guides/source/security.md

@@ -1235,6 +1235,11 @@ version:
 Rails.application.credentials.some_api_key! # => raises KeyError: :some_api_key is blank
 ```
 
+Dependency Management and CVEs
+------------------------------
+
+Please note that we do not accept patches for CVE version bumps. This is because application owners need to manually update their gems regardless of our efforts. Use `bundle update --conservative gem_name` to safely update vulnerable dependencies.
+
 Additional Resources
 --------------------
 

railties/railties.gemspec

@@ -2,6 +2,9 @@
 
 version = File.read(File.expand_path("../RAILS_VERSION", __dir__)).strip
 
+# NOTE: There's no need to update dependencies for CVEs in minor
+# releases when users can simply run `bundle update vulnerable_gem`.
+
 Gem::Specification.new do |s|
   s.platform    = Gem::Platform::RUBY
   s.name        = "railties"