fix: resolve CI test failures and update contact email

- Remove unused Collection import to fix PHPStan error
- Add namespace declarations to test files for architecture compliance
- Update security contact email to [email protected]

Author: iamgerwin

README.md

@@ -257,7 +257,7 @@ Contributions are welcome! Please feel free to submit a Pull Request.
 
 ## Security
 
-If you discover any security related issues, please email gerwin@example.com instead of using the issue tracker.
+If you discover any security related issues, please email iamgerwin@live.com instead of using the issue tracker.
 
 ## Credits
 

src/GsmModem.php

@@ -11,7 +11,6 @@
 use Iamgerwin\GsmModem\Enums\SmsMode;
 use Iamgerwin\GsmModem\Helpers\PduHelper;
 use Iamgerwin\GsmModem\Models\SmsMessage;
-use Illuminate\Support\Collection;
 
 class GsmModem implements ModemInterface
 {

tests/ArchTest.php

@@ -1,5 +1,7 @@
 <?php
 
+namespace Iamgerwin\GsmModem\Tests;
+
 arch('it will not use debugging functions')
     ->expect(['dd', 'dump', 'ray'])
     ->each->not->toBeUsed();

tests/ExampleTest.php

@@ -1,5 +1,7 @@
 <?php
 
+namespace Iamgerwin\GsmModem\Tests;
+
 it('can test', function () {
     expect(true)->toBeTrue();
 });