Add linux-arm build

[glensc]

pi@raspberrypi:~ $ kubelogin
-bash: /home/pi/.local/bin/kubelogin: cannot execute binary file: Exec format error

pi@raspberrypi:~ $ file /home/pi/.local/bin/kubelogin
/home/pi/.local/bin/kubelogin: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), statically linked, Go BuildID=nzl79QF86Shyj5JcIJkT/D_j1SM6RVatGkKosx9zA/AfwkUduEP8lBrK8moCBS/fPJOPyQrPE-QHajRHN76, with debug_info, not stripped

pi@raspberrypi:~ $ uname -m
armv7l

with the only linux-arm package:

• https://github.com/Azure/kubelogin/releases/download/v0.0.32/kubelogin-linux-arm64.zip

...it shouldn't be difficult to add extra arch as this is go package