[SKIP SOF-TEST] .github/zephyr: de-hardcode the name of the zephyr remote#8369

kv2019i merged 2 commits intothesofproject:mainthesofproject/sof:mainfrom

marc-hb:dehardcode-zephyr-remotemarc-hb/sof:dehardcode-zephyr-remoteCopy head branch name to clipboard