Meng Zhuo 2732481bfc chore: add riscv64 in buildx ... Tested on visionfive2 ``` root@visionfive2-1:~/gost/cmd/gost# uname -a Linux visionfive2-1 5.15.0-starfive #1 SMP Sun Jun 11 07:48:39 UTC 2023 riscv64 GNU/Linux root@visionfive2-1:~/gost/cmd/gost# ./gost -V gost 2.12.0 (go1.22.3 linux/riscv64) ```		2024-07-22 11:08:35 +08:00
..
buildx.yaml	chore: add riscv64 in buildx	2024-07-22 11:08:35 +08:00
release.yml	bump deps; bump sdk to 1.21	2024-02-14 23:08:24 +08:00