Update dependency phpstan/phpstan-strict-rules to v2.0.6

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
phpstan/phpstan-strict-rules	2.0.4 -> 2.0.6

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Release Notes

phpstan/phpstan-strict-rules (phpstan/phpstan-strict-rules)

v2.0.6

Compare Source

• f9f77ef - Add numeric check on unary plus and unary minus

v2.0.5

Compare Source

• 1f1358d - UselessCastRule: do cheaper check first
• 73c5baa - Update metcalfc/changelog-generator action to v4.6.2
• f203fec - Match Rule Descriptions with Configuration Parameters in README.md
• 3ecc310 - Use relative links for rules.neon
• 04f299f - Update metcalfc/changelog-generator action to v4.5.0

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Configuration

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