Tests are broken on BSD because /dev/fd/{N} aren't supported there

[yurivict]

Describe the bug
File descriptors aren't mapped under /dev/fd on BSDs.

Therefore, tests fail with messages like this:

yq: error: argument files: can't open '/dev/fd/3': [Errno 2] No such file or directory: '/dev/fd/3'

Version of yq: 3.4.1
Operating system: FreeBSD 14.0
Installed via: port

Input Yaml
Concise yaml document(s) (as simple as possible to show the bug, please keep it to 10 lines or less)
data1.yml:

this: should really work

data2.yml:

but: it strangely didn't

Command
The command you ran:

yq merge data1.yml data2.yml

Actual behavior

cat: meow

Expected behavior

this: should really work
but: it strangely didn't

Additional context
Add any other context about the problem here.

[mikefarah]

Not sure what would need to be done to fix this - though assuming it's just a development problem, you could run the build in docker, the current Makefile supports this.

[yurivict]

No, Docker has nothing to do with this problem, and Docker also doesn't work on FreeBSD.