Fixing the following warning:
```
$ make fleet
[...]
# github.com/shoenig/go-m1cpu
../../gopath/pkg/mod/github.com/shoenig/go-m1cpu@v0.1.6/cpu.go:75:17: warning: variable length array folded to constant array as an extension [-Wgnu-folding-constant]
../../gopath/pkg/mod/github.com/shoenig/go-m1cpu@v0.1.6/cpu.go:77:16: warning: variable length array folded to constant array as an extension [-Wgnu-folding-constant]
```
PS: This warning happens when building fleet because we need to decouple
the client code from `server/service`... (hopefully to be done as part
of https://github.com/fleetdm/fleet/issues/36087)
Lucas Manuel Rodriguez
e68a129eb9