Update phpstan/phpstan from 0.12.19 to 0.12.23

[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:

• 71e529ef PHPStan 0.12.23
• 1fe2539e Updated PHPStan to commit 68480443535a5debb42951d85b8a02cecb1ab1b7
• a4da72ea Updated PHPStan to commit 518302de43ed212ed81a46783359a0d63e599d90
• a020298a Updated PHPStan to commit 83e74bfe87e5d3bc420ffcf7ba6f8c0e9cd55440
• a5816045 Updated PHPStan to commit 2cbc090055f570fd4b27d7400de96accd21ff126
• 4d83bab0 Updated PHPStan to commit 8c4f05cecb2000956c9286727628eb6e6175934b
• ecedd7d1 Updated PHPStan to commit 70e559bec1878885efb433e07d0d1425b5128091
• 4b6d5364 Updated PHPStan to commit 0baf6dec0d9c1a385673040ed6a7d7ac04e9a958
• 714160bc Update stub-files.md
• 59090e1b PHPStan 0.12.22
• 2169828d Updated PHPStan to commit e625228e5f13e3c01e8f4f2e780d59ae76fd4ff8
• e0f337a4 Updated PHPStan to commit c4a1b2023fd0b0becfd7cb1dee84c685d39a09cf
• 2838a7a1 PHPStan 0.12.21
• 528576ad Updated PHPStan to commit ccaa6bf41cb93412536b931121abffb0d38ede6f
• a3ef7a0a Updated PHPStan to commit 5e66c6cda3c859f10990665de4a39a26e42f00ae
• b7e21a2f Reproduce problem with using unprefixed functions that exists prefixed in PHPStan
• 3fe9519a Updated PHPStan to commit a1d3990c95b7a064a0451111153a6bef39f5d9a2
• b1edafbb Reproduce problem when installed alongside php-metrics
• 3d79c710 PHPStan 0.12.20
• d9973aab Updated PHPStan to commit 34edb50da3ffd24c9b47beb1e3daf847b1c57b4e
• a4daf8e3 Updated PHPStan to commit 61cb5aa2454b834579979eaa8d7ffb781ac5d8c2
• 135a8a54 Updated PHPStan to commit b55208ea6cc5b9d5e86805fb65e5e0dc10571935
• a74b4fe0 Updated PHPStan to commit db656b0636232be2059d0417d5de00bf5b68f43a
• cd3a2213 Updated PHPStan to commit d4f09073f5c0f4d589633aec236e0999b77d0e2e
• 93aaa15a Updated PHPStan to commit 1e02e9d61814d93442cd99c3611ced2d1bd5f86d
• f894d770 Updated PHPStan to commit 9a46f7f32a586d98640e4601e3a4b3bea3ec7f14
• c0bac583 Reproduce problem with mixing different phpdoc-parser versions
• 51bed805 Updated PHPStan to commit 87897c2a4980d68efa1c46049ac2eefe767ec946
• 1243d58e Reproduce problem with mixing different PHP-Parser versions
• 6d7c34a4 Document literals and constants in PHPDocs
• 9d1dcd37 todo
• f3f4818e Document mixins
• 9b070916 Updated PHPStan to commit e2b2a441d4a99c8ff3fe3609262d7e482f71a3c6
• 6c2311d4 Updated PHPStan to commit 2d1cac00f2adf02a45d5e76d5f4fc60d3df49e33
• 6f8e4c79 Updated PHPStan to commit 3bc8d7fe385d7a6bd5935e12c489b3d0c3acdcb5
• 6eb1d7a9 Updated PHPStan to commit c8a27e213fa8cbd8da2bef1955e6257efedcebcb
• 1920fe14 Updated PHPStan to commit b02ee1444440ed995c17171c456feec2c56e0cb2
• b3f08c5d April to May
• fe83bd04 Updated PHPStan to commit 28d1c34c569077380375b7cb942083bc5230b6a8
• 5e16904d Bump jquery from 3.4.1 to 3.5.0 in /website
• c4927cb1 Updated PHPStan to commit 730a902f60d23eb0b480040aeea51cf07962287d
• fbae93e1 Updated PHPStan to commit 90b118631fdafa0af42b6e2d100f9fba85fe4afc
• b14627b5 Updated PHPStan to commit 162e21273607641ff3cd91aaced758a0988d23a8
• c9ce6ea8 tslint fixes
• 4ae787e9 Playground - highlighting error lines
• ef64a42a Updated PHPStan to commit 5d439d4535b373a3cbb004f367224151983c085a
• 17508899 Updated PHPStan to commit 6e93254e4aef23e33d1024c0309a11ddd7c60856
• 46e29b3d Updated PHPStan to commit 00e3090d373a63583bfaab95afd79c7de0703a94
• ffc03409 Updated PHPStan to commit fb9d32004b88dc210e545a79c2f372462cea4e21

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