Bump rich from 14.3.3 to 15.0.0

Bumps [rich](https://github.com/Textualize/rich) from 14.3.3 to 15.0.0.
- [Release notes](https://github.com/Textualize/rich/releases)
- [Changelog](https://github.com/Textualize/rich/blob/master/CHANGELOG.md)
- [Commits](Textualize/rich@v14.3.3...v15.0.0)

---
updated-dependencies:
- dependency-name: rich
  dependency-version: 15.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

pyproject.toml

@@ -49,7 +49,7 @@ test = [
 release = ["build>=1.4.3", "jinja2>=3.1.6", "sphinx>=9.1.0", "twine>=6.2.0"]
 lint = ["basedpyright>=1.39.0", "ruff>=0.15.10"]
 dev = [
-  "rich>=14.3.3",
+  "rich>=15.0.0",
   "splunk-sdk[openai, anthropic]",
   { include-group = "test" },
   { include-group = "lint" },