Update proselint requirement from <0.14 to <0.15

Updates the requirements on [proselint](https://github.com/amperser/proselint) to permit the latest version.
- [Release notes](https://github.com/amperser/proselint/releases)
- [Changelog](https://github.com/amperser/proselint/blob/main/CHANGELOG.md)
- [Commits](amperser/proselint@v0.1.0...0.14.0)

---
updated-dependencies:
- dependency-name: proselint
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements-utils.txt

@@ -1,3 +1,3 @@
 black<25
 isort<6
-proselint<0.14
+proselint<0.15