Update squizlabs/php_codesniffer requirement from ^3.2 to ^3.5 (#20)

Updates the requirements on [squizlabs/php_codesniffer](https://github.com/squizlabs/PHP_CodeSniffer) to permit the latest version.
- [Release notes](https://github.com/squizlabs/PHP_CodeSniffer/releases)
- [Commits](squizlabs/PHP_CodeSniffer@3.2.0...3.5.8)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

composer.json

@@ -22,7 +22,7 @@
         "phpunit/phpunit": "^9.4",
         "roave/infection-static-analysis-plugin": "^1.6",
         "spatie/phpunit-watcher": "^1.23",
-        "squizlabs/php_codesniffer": "^3.2",
+        "squizlabs/php_codesniffer": "^3.5",
         "vimeo/psalm": "^4.2"
     },
     "suggest": {