Bump letter_opener_web from 1.4.0 to 1.4.1 (#16837)

Bump letter_opener_web from 1.4.0 to 1.4.1 (#16837)

Bumps [letter_opener_web](https://github.com/fgrehm/letter_opener_web) from 1.4.0 to 1.4.1.
- [Release notes](https://github.com/fgrehm/letter_opener_web/releases)
- [Changelog](https://github.com/fgrehm/letter_opener_web/blob/master/CHANGELOG.md)
- [Commits](https://github.com/fgrehm/letter_opener_web/compare/v1.4.0...v1.4.1)

---
updated-dependencies:
- dependency-name: letter_opener_web
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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