Update dependency nixfmt to v1.2.0

[airs-devtools-renovate]

This PR contains the following updates:

Package	Update	Change
nixfmt	minor	1 → 1.2.0

---

Release Notes

NixOS/nixfmt (nixfmt)

v1.2.0

• Reformat indented strings, reformatting to simple strings when appropriate: #​348
• Added musl static build and nixfmt-static package: #​349
• Added auto-release GitHub Actions workflow: #​354
• Fixed empty lists/sets with comments idempotency: #​363
• Fixed language annotations inside lists on function arguments: #​355
• Fixed parser for chained prefix operators: #​352
• Fixed inconsistent comment indentation in parameter lists: #​346
• Fixed language annotations followed by multiple new lines: #​347
• Memory optimization: don't retain thunks when appending to Trivia: #​350
• Added a flake formatter (so nix fmt works): #​357
• Added link to standard.md in README: #​361
• Fixed typo in README for nixfmt installation: #​345

v1.1.0

• Added support for "language annotation" comments (e.g. /* lang */ ""), used by things like tree-sitter grammars: #​343
• Fixed a regression causing incorrect path value indentation: #​342

v1.0.1

• Fix bug where --ir would overwrite the source file: #​322
• Fix pre-commit hook so it works without cabal: #​311

---

Configuration

📅 Schedule: (UTC)

• Branch creation
  • At any time (no schedule defined)
• Automerge
  • At any time (no schedule defined)

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR has been generated by Mend Renovate.

[mackato]

lockFileMaintenance のみ更新する方針 (#12) を適用したため close。devbox.lock のみ更新する Lock file maintenance PR として再作成されます。