[11.x] Test Improvements

[crynobone]

While GitHub Actions can install sqlite3 it still need to be added to Window PATH before we can run schema:dump on Windows environment:

 1) Illuminate\Tests\Integration\Database\Sqlite\SchemaStateTest::testSchemaDumpOnSqlite
Symfony\Component\Process\Exception\ProcessFailedException: The command "sqlite3 "${:LARAVEL_LOAD_DATABASE}" .schema" failed.

Exit Code: 1(General error)

Working directory: D:\a\framework\framework

Output:
================


Error Output:
================
'sqlite3' is not recognized as an internal or external command,
operable program or batch file.

[bakerkretzmar]

This is not equivalent to the database statements I had here previously, so now the sqlite_stat* tables aren't actually created and this test will always pass even if those tables aren't being removed from dumps correctly. I'll fix it in a new PR.

[crynobone]

Our GitHub Actions doesn't test using persistent SQLite and only using :in-memory:. so DB::connection('sqlite') is not the correct usage.

[bakerkretzmar]

I know, this test specifically needs a real database file. The dump file created by the test with your changes is empty, so it's not testing anything anymore.