chore: relax Go requrenment

Signed-off-by: Valery Piashchynski <[email protected]>

Update README.md

[#193]: update frame validation error to current version

feature: Ping/Pong stream flags

Signed-off-by: Valery Piashchynski <[email protected]>

chore: go1.21

Signed-off-by: Valery Piashchynski <[email protected]>

chore(deps): update dependencies

[#183]: build(deps): bump github.com/goccy/go-json from 0.9.11 to 0.10.0

json: switch back to the goccy

Signed-off-by: Valery Piashchynski <[email protected]>

chore: update deps, replace json encoder with sonic

Signed-off-by: Valery Piashchynski <[email protected]>

chore: close pipes when closing relay

Signed-off-by: Valery Piashchynski <[email protected]>