merge revision(s) f27eb814,d75f7078,d5836db1: [Backport #18443]

	Sync io-console gem.

	---
	 ext/io/console/console.c           | 8 ++++++--
	 test/io/console/test_io_console.rb | 8 ++++++++
	 2 files changed, 14 insertions(+), 2 deletions(-)

	[ruby/io-console] bump up to 0.5.11

	https://github.com/ruby/io-console/commit/ad3805200c
	---
	 ext/io/console/io-console.gemspec | 2 +-
	 1 file changed, 1 insertion(+), 1 deletion(-)

	Fix `Leaked file descriptor: TestIO_Console#test_console_kw`

	```
	Leaked file descriptor: TestIO_Console#test_console_kw: 10 : #<File:/dev/tty>
	```
	---
	 test/io/console/test_io_console.rb | 4 +++-
	 1 file changed, 3 insertions(+), 1 deletion(-)