chore: update phpstan-baseline.php

[kenjis]

Description
Because of PHPStan upgrade.

Error: Ignored error pattern #^Return type \(CodeIgniter\\Database\\MySQLi\\PreparedQuery\) of method CodeIgniter\\Database\\MySQLi\\PreparedQuery\:\:_prepare\(\) should be covariant with return type \(\$this\(CodeIgniter\\Database\\BasePreparedQuery\<TConnection, TStatement, TResult\>\)\) of method CodeIgniter\\Database\\BasePreparedQuery\<mysqli,mysqli_stmt,mysqli_result\>\:\:_prepare\(\)$# in path /home/runner/work/CodeIgniter4/CodeIgniter4/system/Database/MySQLi/PreparedQuery.php was not matched in reported errors.
Error: Ignored error pattern #^Return type \(CodeIgniter\\Database\\OCI8\\PreparedQuery\) of method CodeIgniter\\Database\\OCI8\\PreparedQuery\:\:_prepare\(\) should be covariant with return type \(\$this\(CodeIgniter\\Database\\BasePreparedQuery\<TConnection, TStatement, TResult\>\)\) of method CodeIgniter\\Database\\BasePreparedQuery\<resource,resource,resource\>\:\:_prepare\(\)$# in path /home/runner/work/CodeIgniter4/CodeIgniter4/system/Database/OCI8/PreparedQuery.php was not matched in reported errors.
Error: Ignored error pattern #^Return type \(CodeIgniter\\Database\\Postgre\\PreparedQuery\) of method CodeIgniter\\Database\\Postgre\\PreparedQuery\:\:_prepare\(\) should be covariant with return type \(\$this\(CodeIgniter\\Database\\BasePreparedQuery\<TConnection, TStatement, TResult\>\)\) of method CodeIgniter\\Database\\BasePreparedQuery\<PgSql\\Connection,PgSql\\Result,PgSql\\Result\>\:\:_prepare\(\)$# in path /home/runner/work/CodeIgniter4/CodeIgniter4/system/Database/Postgre/PreparedQuery.php was not matched in reported errors.
Error: Ignored error pattern #^Return type \(CodeIgniter\\Database\\SQLSRV\\PreparedQuery\) of method CodeIgniter\\Database\\SQLSRV\\PreparedQuery\:\:_prepare\(\) should be covariant with return type \(\$this\(CodeIgniter\\Database\\BasePreparedQuery\<TConnection, TStatement, TResult\>\)\) of method CodeIgniter\\Database\\BasePreparedQuery\<resource,resource,resource\>\:\:_prepare\(\)$# in path /home/runner/work/CodeIgniter4/CodeIgniter4/system/Database/SQLSRV/PreparedQuery.php was not matched in reported errors.
Error: Ignored error pattern #^Return type \(CodeIgniter\\Database\\SQLite3\\PreparedQuery\) of method CodeIgniter\\Database\\SQLite3\\PreparedQuery\:\:_prepare\(\) should be covariant with return type \(\$this\(CodeIgniter\\Database\\BasePreparedQuery\<TConnection, TStatement, TResult\>\)\) of method CodeIgniter\\Database\\BasePreparedQuery\<SQLite3,SQLite3Stmt,SQLite3Result\>\:\:_prepare\(\)$# in path /home/runner/work/CodeIgniter4/CodeIgniter4/system/Database/SQLite3/PreparedQuery.php was not matched in reported errors.
Error: Ignored error pattern #^Return type \(CodeIgniter\\HTTP\\DownloadResponse\) of method CodeIgniter\\HTTP\\DownloadResponse\:\:noCache\(\) should be covariant with return type \(\$this\(CodeIgniter\\HTTP\\ResponseInterface\)\) of method CodeIgniter\\HTTP\\ResponseInterface\:\:noCache\(\)$# in path /home/runner/work/CodeIgniter4/CodeIgniter4/system/HTTP/DownloadResponse.php was not matched in reported errors.
Error: Ignored error pattern #^Return type \(CodeIgniter\\HTTP\\DownloadResponse\) of method CodeIgniter\\HTTP\\DownloadResponse\:\:noCache\(\) should be covariant with return type \(\$this\(CodeIgniter\\HTTP\\Response\)\) of method CodeIgniter\\HTTP\\Response\:\:noCache\(\)$# in path /home/runner/work/CodeIgniter4/CodeIgniter4/system/HTTP/DownloadResponse.php was not matched in reported errors.

https://github.com/codeigniter4/CodeIgniter4/actions/runs/7147604463/job/19467408417?pr=8310

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

[kenjis]

Please review first.

[kenjis]

@paulbalandan Thank you!