Update dependency phpstan/phpstan to v1.4.5

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
phpstan/phpstan	require-dev	patch	1.4.4 -> 1.4.5

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Release Notes

phpstan/phpstan

v1.4.5

Compare Source

Improvements 🔧

• AnalyseApplication: Do not re-analyse stubs on every run (#​730), #​5826, thanks @​dktapps!
• Add shorthand for --generate-baseline (-b) (#​980), thanks @​Seldaek!
• Support narrowing down array_filter() return type via string callable (#​938), #​6417, thanks @​herndlm!
• Loop optimization (#​757), thanks @​ging-dev!

Bugfixes 🐛

• Fixed level 9 issues (phpstan/phpstan-src@9f12f0f), #​6423, #​6464, #​6236, #​6418, #​6118, #​6081, #​6053, #​6055, #​5860, #​6230
• Cast PHPDoc array key type with array key casting rules (phpstan/phpstan-src@5d17b84), #​6117
• Support closure bind with class-string (#​706), #​4949, thanks @​mvorisek!
• Fix NeverType::toBoolean() (phpstan/phpstan-src@fe3a341), #​6258
• Fix DatePeriod constructor extension in subclasses (phpstan/phpstan-src@0c82b3a), #​6500
• Forget remembered specific type when entering arrow function with same-named parameter (phpstan/phpstan-src@af38f03), #​6473
• Fix segfault (phpstan/phpstan-src@d101764), #​6501

Function signature fixes 🤖

• More precise array_chunk signature (#​709), thanks @​staabm!
• Narrow the type for the preg_replace_callback() callable. (#​758), thanks @​johnbillion!
• Update return types for hash functions (#​822), thanks @​jlherren!
• Fix type for array_splice() argument $replacement (#​901), #​6288, thanks @​spawnia!
• stream_bucket_new returns an object (#​968), thanks @​mind-bending-forks!
• More precise signatures for mb_* functions (#​717), thanks @​staabm!
• Fix array_column() with null as $column_key (#​970), thanks @​jlherren!

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