chore(deps-dev): update rector/rector requirement from 0.19.7 to 0.19.8

Updates the requirements on [rector/rector](https://github.com/rectorphp/rector) to permit the latest version.
- [Release notes](https://github.com/rectorphp/rector/releases)
- [Commits](rectorphp/rector@0.19.7...0.19.8)

---
updated-dependencies:
- dependency-name: rector/rector
  dependency-type: direct:development
...

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

Author: dependabot[bot]

composer.json

@@ -37,7 +37,7 @@
         "mockery/mockery": "^1.0",
         "phpstan/extension-installer": "^1.3",
         "phpstan/phpstan-strict-rules": "^1.5",
-        "rector/rector": "0.19.7"
+        "rector/rector": "0.19.8"
     },
     "provide": {
         "codeigniter4/authentication-implementation": "1.0"