Updated PHPStan to v1 + PHPUnit to v9.

[raing3]

PHPStan 1.0 release announcement - https://phpstan.org/blog/phpstan-1-0-released

Breaking changes can be seen here - https://github.com/phpstan/phpstan/releases/tag/1.0.0

The PHP code for the extension seems fairly minimal and can't see any BC breakages myself. Tests/code quality tools passed and the detection of banned PHP functions/statements still worked when used in conjunction with PHPStan 1.0 in a test project.

I removed the ^0.12 constraint entirely since it doesn't seem overly important to me to maintain compatibility with the pre-1.0 PHPStan version. Users who can't upgrade PHPStan can remaing on an older version of this package and avoid having to maintain compatibility/test with multiple versions of PHPStan going forward for any changes made here. Let me know if you want it added back.

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.php_cs.cache was renamed to .php-cs-fixer.cache in v3, see - https://github.com/FriendsOfPHP/PHP-CS-Fixer/blob/master/UPGRADE-v3.md#rename-of-files

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Also upgraded PHPUnit to the latest version (similar to https://github.com/ekino/phpstan-banned-code/pull/41/files). Used the inbuilt migration feature to upgrade the configuration (--migrate-configuration) and updated to match current indentation/ordering as much as possible.

Changes to the PHPUnit config structure relate to: https://github.com/sebastianbergmann/phpunit/blob/9.3.11/ChangeLog-9.3.md#configuration-of-code-coverage-and-logging-in-phpunitxml

Without updating the configuration an additional warning is displayed in the output:

Warning:       Your XML configuration validates against a deprecated schema.
Suggestion:    Migrate your XML configuration using "--migrate-configuration"!

Please let me know if any changes are required to get these changes merged and released.

[mremi]

Thanks a lot for this update

[raing3]

Thanks for reviewing and merging so promptly. :)

[mremi]

And a new tag is available https://github.com/ekino/phpstan-banned-code/releases/tag/v1.0.0