[ci] Move test-linux-stable-no-try-runtime to GHA (#5979)
PR moves `test-linux-stable-no-try-runtime` from gitlab to github. I disabled two tests because our current runners don't have necessary syscalls enabled. Will continue working on it in https://github.com/paritytech/ci_cd/issues/1056 Also PR remove `gh cli` installation since it's installed in the `ci-unified` image. close https://github.com/paritytech/ci_cd/issues/1023