test-go: print version

[crazy-max]

• needs dockerfile: install bats from source #180
• relates to test-go fails on ubuntu:22.04: undefined: syscall.SYS_FCNTL #177

https://github.com/tonistiigi/xx/actions/runs/12236180951/job/34129079148#step:5:1002

#83 77.99 1..49
#83 89.73 # go version go1.18.1 linux/amd64
#83 89.73 ok 1 version

[crazy-max]

Hum seems go is not installed when running on Ubuntu 20.04: https://github.com/tonistiigi/xx/actions/runs/12236180951/job/34129078599#step:5:1128

#88 [test-go test-go 2/2] RUN --mount=type=cache,target=/pkg-cache,sharing=locked --mount=type=cache,target=/root/.cache ./test-go.bats
#88 791.9 1..49
#88 792.0 not ok 1 version
#88 792.0 # (from function `assert_success' in file bats-assert/src/assert.bash, line 114,
#88 792.0 #  in test file test-go.bats, line 67)
#88 792.0 #   `assert_success' failed with status 127
#88 792.0 # 
#88 792.0 # -- command failed --
#88 792.0 # status : 127
#88 792.0 # output : /usr/libexec/bats-core/bats-exec-test: line 62: go: command not found
#88 792.0 # --
#88 792.0 #