docs: update clippy section in DEVELOPMENT.md

[xtqqczze]

• remove note about pre-commit hook being broken on macOS
• update clippy command to include --workspace, matching pre-commit
• remove outdated paragraph about msrv in clippy.toml

[github-actions]

GNU testsuite comparison:

Skip an intermittent issue tests/tail/symlink (fails in this run but passes in the 'main' branch)
Skipping an intermittent issue tests/cut/bounded-memory (passes in this run but fails in the 'main' branch)
Skipping an intermittent issue tests/date/date-locale-hour (passes in this run but fails in the 'main' branch)
Skipping an intermittent issue tests/tail/tail-n0f (passes in this run but fails in the 'main' branch)
Congrats! The gnu test tests/dd/no-allocate is now passing!
Congrats! The gnu test tests/tail/pipe-f is now passing!
Note: The gnu test tests/env/env-signal-handler was skipped on 'main' but is now failing.

[oech3]

We should guard it at pre-commit hook at other platform.