build(deps-dev): update phpstan/phpstan requirement from 1.9.4 to 1.9.14

[dependabot[bot]]

Updates the requirements on phpstan/phpstan to permit the latest version.

Release notes

Sourced from phpstan/phpstan's releases.

1.9.14

Bugfixes 🐛

• Fix filter_var() narrowing with unknown options (#2146), #8516, thanks @​herndlm!
• Fix types after ctype_digit() with cast parameter (#2189), #8736, thanks @​staabm!

Function signature fixes 🤖

• Adapt Redis::connect() signature to upstream changes (#2187, #2188), #8733, thanks @​greg0ire!

Internals 🔍

• PHPStan's Homebrew formula gets updated automatically on release (https://github.com/phpstan/phpstan/commit/598f17ee70fd4c5199e2da912597ef67e4abbf32), #8738

Commits

• e5fcc96 PHPStan 1.9.14
• 4dd92cd Updated PHPStan to commit 4dd92cd938bacc1e3a4cc82859f183159049d321
• 39c12da Updated PHPStan to commit 39c12da9e114dedcfecdc99c14a3b9157ce945b9
• 598f17e Homebrew bump formula on release workflow
• 7fa21cf Updated PHPStan to commit 7fa21cf580450a24bc957b8d23dd9e16da3a200b
• 3f57688 Updated PHPStan to commit 3f5768863365f46762c9c51024fc69cc947a5915
• a092242 PHPStan 1.9.13
• 051b06e Updated PHPStan to commit 051b06ea5b36ce2f6131d07fbfcb4b065bd83ef5
• 279c781 Updated PHPStan to commit 279c7811e91acf3266b0ce3618655e35b39a2f28
• a9fd9ff Lock extensions for 1.9.x
• Additional commits viewable in compare view

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