Update symplify/phpstan-rules requirement from ^12.1.4.72 to ^13.0.1

[dependabot[bot]]

Updates the requirements on symplify/phpstan-rules to permit the latest version.

Commits

• c117396 release PHP 7.2 downgraded
• ef82114 Add unused public and type coverage packages (#140)
• 58c8dbf Change NoReturnArrayVariableListRule to ignore array spreads (#139)
• 434d05d space
• dc46c03 rebuild README
• 69e4d29 [docs] Show rules directly in README (#137)
• 51b5765 Improve no single interface (#136)
• 883c98d restore parseClassReflection()
• b22fabb Allow abstract classes to be implemented in NoSingleInterfaceImplementerRule ...
• 3c9b05f docs
• Additional commits viewable in compare view

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