Bump textual-dev from 1.7.0 to 1.8.0

Bumps [textual-dev](https://github.com/Textualize/textual-dev) from 1.7.0 to 1.8.0.
- [Release notes](https://github.com/Textualize/textual-dev/releases)
- [Commits](https://github.com/Textualize/textual-dev/commits)

---
updated-dependencies:
- dependency-name: textual-dev
  dependency-version: 1.8.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pyproject.toml

@@ -57,6 +57,6 @@ dev = [
     "pre-commit>=4.3.0",
     "pytest>=8.4.1",
     "pytest-cov>=6.2.1",
-    "textual-dev==1.7.0",
+    "textual-dev==1.8.0",
     "tomli-w>=1.2.0",
 ]