Update phpstan/phpstan from 0.12.10 to 0.12.11

[violinist-bot]

If you have a high test coverage index, and your tests for this pull request are passing, it should be both safe and recommended to merge this update.

Here is a list of changes between the version you use, and the version this pull request updates to:

• ca5f2b7c PHPStan 0.12.11
• 83a28735 Updated PHPStan to commit cbd06eb14fe1ddbe63cb4b959a47916b570115d6
• c39b628e Use more obscure PHP extension to reproduce the test in GitHub Actions
• 0a90d789 Moved more build steps to GitHub Actions
• d707790a Updated PHPStan to commit 7e28fb88186dfe5e92accdc855f679f1c4eb582d
• af17c473 Updated PHPStan to commit 71bda0984b2e45f237f9d7d62ff4ad47e3c5dce8
• 144eb80c Updated PHPStan to commit 16b2d72e2fd73150a4bca4c7caee65fa226ca0e5
• 0a4243ee Updated PHPStan to commit a293802ab19eade263b8d6b5e2c0c15541035ab2
• d63ecb4d Updated PHPStan to commit ebe779c50a3b48944138ba5000baf78db8800a78
• 7a4d1124 Updated PHPStan to commit bc5c80a5dd2e2772fea3d60235cd1b5a6f6c9d1d
• cf596b97 Updated PHPStan to commit 0a5cd64058948e164c5e2612294eb0ae806b4d08
• 4f3c0df9 GitHub Actions badge
• c8636e7e GitHub Actions on board!
• 6370b079 Updated PHPStan to commit 0464d0fc23f8bd87a119f92df539ea40035f548c
• 6d707315 Updated PHPStan to commit 34769d6e0f5b0ba3fc8b93a38596e0f63f30bf2b
• a9a4c754 Updated PHPStan to commit 6d4f7082b991fb1d01bfe3a44116044e5fed5eb7
• e45361e0 Updated PHPStan to commit bb56211e79caad4fe0238f7c186eb7a68bb81a55
• 2f226f05 Updated PHPStan to commit 54eb9ce142a546f7ee3ccd1bd88c01368ab33941
• 64a79c35 New sponsor - ShipMonk

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