Update dependency phpstan/phpstan-strict-rules to v1.5.5

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
phpstan/phpstan-strict-rules	1.5.3 -> 1.5.5

---

Release Notes

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

### [`v1.5.5`](https://togithub.com/phpstan/phpstan-strict-rules/releases/tag/1.5.5) [Compare Source](https://togithub.com/phpstan/phpstan-strict-rules/compare/1.5.4...1.5.5) - [2e193a0](http://github.com/phpstan/phpstan-strict-rules/commit/2e193a07651a6f4be3baa44ddb21d822681f5918) - ArrayFilterStrictRule - get rid of different behavour with `treatPhpDocTypesAsCertain: false` ### [`v1.5.4`](https://togithub.com/phpstan/phpstan-strict-rules/releases/tag/1.5.4) [Compare Source](https://togithub.com/phpstan/phpstan-strict-rules/compare/1.5.3...1.5.4) - [8afd4af](http://github.com/phpstan/phpstan-strict-rules/commit/8afd4af32bbff7b1f6df3d42bda45b2e661ba297) - Loosen up ArrayFilterStrictRule for unions with clearly truthy/falsey types

---

Configuration

📅 Schedule: Branch creation - "before 4pm on Wednesday except before 9am on Wednesday" in timezone America/New_York, Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• [ ] If you want to rebase/retry this PR, check this box

---

This PR has been generated by Mend Renovate. View repository job log here.