Bump sqlfluff from 2.3.0 to 2.3.1

Bumps [sqlfluff](https://github.com/sqlfluff/sqlfluff) from 2.3.0 to 2.3.1.
- [Release notes](https://github.com/sqlfluff/sqlfluff/releases)
- [Changelog](https://github.com/sqlfluff/sqlfluff/blob/main/CHANGELOG.md)
- [Commits](sqlfluff/sqlfluff@2.3.0...2.3.1)

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

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

Author: dependabot[bot]

poetry.lock

@@ -18,7 +18,7 @@ pre-commit = "^3.4.0"
 pytest = "^7.4.1"
 pytest-cov = "^4.1.0"
 black = "^23.1.0"
-sqlfluff = "^2.3.0"
+sqlfluff = "^2.3.1"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]