CodeIgniter 4.6.4 update (#504)

* chore(deps): bump codeigniter4/framework from 4.6.3 to 4.6.4

Bumps [codeigniter4/framework](https://github.com/codeigniter4/framework) from 4.6.3 to 4.6.4.
- [Release notes](https://github.com/codeigniter4/framework/releases)
- [Commits](codeigniter4/framework@v4.6.3...v4.6.4)

---
updated-dependencies:
- dependency-name: codeigniter4/framework
  dependency-version: 4.6.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

* Fix phpdoc, Update type hint for namespace property

* Add synchronous key per upgrade guide

---------

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

Author: JackDunnCodes

app/Config/Database.php

@@ -182,6 +182,7 @@ class Database extends Config
         'port'        => 3306,
         'foreignKeys' => true,
         'busyTimeout' => 1000,
+        'synchronous' => null,
         'dateFormat'  => [
             'date'     => 'Y-m-d',
             'datetime' => 'Y-m-d H:i:s',

composer.lock

@@ -40,7 +40,7 @@ abstract class ProjectTestCase extends CIUnitTestCase
      * Note that running "all" runs migrations in date order,
      * but specifying namespaces runs them in namespace order (then date)
      *
-     * @var array|string|null
+     * @var array<int, string>|string|null
      */
     protected $namespace = 'App';