Require Ruby 2.6.10

Library/Homebrew/Gemfile.lock

@@ -266,7 +266,7 @@ DEPENDENCIES
   warning
 
 RUBY VERSION
-   ruby 2.6.8p205
+   ruby 2.6.10p210
 
 BUNDLED WITH
    2.3.26

Library/Homebrew/brew.sh

@@ -540,7 +540,7 @@ then
 
   # Set a variable when the macOS system Ruby is new enough to avoid spawning
   # a Ruby process unnecessarily.
-  if [[ "${HOMEBREW_MACOS_VERSION_NUMERIC}" -lt "120000" ]]
+  if [[ "${HOMEBREW_MACOS_VERSION_NUMERIC}" -lt "120601" ]]
   then
     unset HOMEBREW_MACOS_SYSTEM_RUBY_NEW_ENOUGH
   else

Library/Homebrew/extend/os/mac/diagnostic.rb

@@ -206,7 +206,6 @@ module Homebrew
 
       def check_ruby_version
         return if RUBY_VERSION == HOMEBREW_REQUIRED_RUBY_VERSION
-        return if RUBY_VERSION == "2.6.10" # TODO: require 2.6.10
         return if Homebrew::EnvConfig.developer? && OS::Mac.version.prerelease?
 
         <<~EOS

Library/Homebrew/utils/ruby.sh

@@ -1,4 +1,6 @@
-export HOMEBREW_REQUIRED_RUBY_VERSION=2.6.8
+# When bumping, run `brew vendor-gems --update=--ruby`
+# When bumping to a new major/minor version, also update the bounds in the Gemfile
+export HOMEBREW_REQUIRED_RUBY_VERSION=2.6.10
 
 # HOMEBREW_LIBRARY is from the user environment
 # shellcheck disable=SC2154