Update league/csv requirement from ^9.17 to ^9.18

Updates the requirements on [league/csv](https://github.com/thephpleague/csv) to permit the latest version.
- [Release notes](https://github.com/thephpleague/csv/releases)
- [Changelog](https://github.com/thephpleague/csv/blob/master/CHANGELOG.md)
- [Commits](thephpleague/csv@9.17.0...9.18.0)

---
updated-dependencies:
- dependency-name: league/csv
  dependency-type: direct:production
...

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

composer.json

@@ -10,7 +10,7 @@
     "ext-mbstring": "*",
     "ext-pdo_sqlite": "*",
     "phpoffice/phpspreadsheet": "^3.3",
-    "league/csv": "^9.17",
+    "league/csv": "^9.18",
     "halaxa/json-machine": "^1.1",
     "spatie/regex": "^3.1"
   },