Update the maintained branches table in README.md to reflect that we no longer maintain release/v5 or release/v4 due to the associated versions of ibc-go being EOL. Also, update mergify to reflect the currently maintained branches.
This is an automatic backport of pull request #212 done by Mergify.
Update the maintained branches table in README.md to reflect that we no longer maintain
release/v5orrelease/v4due to the associated versions of ibc-go being EOL. Also, update mergify to reflect the currently maintained branches.This is an automatic backport of pull request #212 done by Mergify.