Dockerfile: bump bats to 1.2.0
Dockerfile: bump bats to 1.2.0

Release notes: https://github.com/bats-core/bats-core/releases/tag/v1.2.0

Signed-off-by: Kir Kolyshkin <3a017b8ddb3f9cf3e4a59978b004111bdeb97f08@gmail.com>

mikebrow/runc,kolyshkin/runc,estesp/runc,dqminh/runc,kolyshkin/runc,dqminh/runc,dqminh/runc,rhatdan/runc,estesp/runc,opencontainers/runc,xiaochenshen/runc,xiaochenshen/runc,opencontainers/runc,opencontainers/runc,rhatdan/runc,xiaochenshen/runc,rhatdan/runc,estesp/runc,mikebrow/runc,mikebrow/runc,opencontainers/runc,kolyshkin/runc,dqminh/runc,kolyshkin/runc,rhatdan/runc