test: update for CI 4.5.0

[kenjis]

Description

• update test code
• update phpstan-baseline.php

Checklist:

• Securely signed commits
• [] Component(s) with PHPDoc blocks, only if necessary or adds value
• [] Unit testing, with >80% coverage
• [] User guide updated
• Conforms to style guide

[datamweb]

LGTM.

1) Tests\Unit\AuthRoutesTest::testRoutesCustomNamespace
ErrorException: Undefined array key "register"

P:\MyGitHubWork\shield\tests\Unit\AuthRoutesTest.php:64

--

There were 2 failures:

1) Tests\Unit\AuthRoutesTest::testRoutes
Failed asserting that an array has the key 'register'.

P:\MyGitHubWork\shield\tests\Unit\AuthRoutesTest.php:32

2) Tests\Unit\AuthRoutesTest::testRoutesExcept
Failed asserting that an array has the key 'register'.

P:\MyGitHubWork\shield\tests\Unit\AuthRoutesTest.php:49

For fix get => GET

[kenjis]

Thank you for the review.
At least, PHPStan errors will be gone.