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## Changes
- Use Python 3 in `scripts/lint.py`.
## Why
Some modern OS and distributions do not provide Python 2 by default.
This includes recent macOS versions.
I see that `scripts/generate_changelog.py` already uses Python 3, so I
don't think this change should be controversial.
Without this change, I am unable to run `./scripts/check.sh` on macOS
15.2 without installing Python 2 or adding alias for `python`
executable.
How text editing behaves depends on what OS we are running on.
`target_os` is a compile-time check, but `ctx.os()` is a runtime check,
that works also on web.
Yerkebulan Tulibergenov
Emil Ernerfeldt