Update vimeo/psalm requirement from 4.19.0 to 4.20.0

[dependabot[bot]]

Updates the requirements on vimeo/psalm to permit the latest version.

Release notes

Sourced from vimeo/psalm's releases.

4.20.0

What's Changed

Deprecations

• [TASK] Add AfterFunctionLikeAnalysisEvent::getFunctionlikeStorage by @​ohader in vimeo/psalm#7532

Fixes

• Fix for Exception->getCode return type provider by @​VincentLanglet in vimeo/psalm#7525
• fix wrong detection of purity by @​orklah in vimeo/psalm#7545
• Fix object constant inference by @​klimick in vimeo/psalm#7542
• Handle first class callable on unknown functions by @​orklah in vimeo/psalm#7546
• Revert "PHP 8.1: Report missing typehints in overridden native methods" by @​weirdan in vimeo/psalm#7539
• Ensure trait_exists() always returns bool by @​Ocramius in vimeo/psalm#7554
• sealed keyed arrays by @​orklah in vimeo/psalm#7558
• AtomicStaticCallAnalyzer: clear tmp var from context by @​vincent4vx in vimeo/psalm#7561
• improving error message for Could not resolve config path by @​phptest2 in vimeo/psalm#7573

Internal changes

• Update .gitattributes by @​weirdan in vimeo/psalm#7522

New Contributors

• @​phptest2 made their first contribution in vimeo/psalm#7573

Full Changelog: https://github.com/vimeo/psalm/compare/4.19.0...v4.20.0

Commits

• f82a70e Merge pull request #7573 from phptest2/4.x
• 582624a improving error message for Could not resolve config path
• 2128ab1 Merge pull request #7561 from b2pweb/clear-context-on-static-call
• 3c3e692 AtomicStaticCallAnalyzer: clear tmp var from context (fix #7556)
• ff2636e Merge pull request #7558 from orklah/tweaksToArrays
• 1c2ffc8 tweaks
• bd14653 Merge pull request #7554 from Ocramius/fix/#7478-trait_exists-always-returns-...
• fabcda1 Ensure trait_exists() always returns bool
• dadb1f2 Merge pull request #7539 from vimeo/revert-7363-81_returntypewillchange
• 49d2566 Suppress UnusedClass
• Additional commits viewable in compare view

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