chore(deps): update dependency coreruleset/coreruleset to v4.22.0 in readme.md

[renovate]

This PR contains the following updates:

Package	Update	Change
coreruleset/coreruleset	minor	4.21.0 → 4.22.0

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Release Notes

coreruleset/coreruleset (coreruleset/coreruleset)

v4.22.0

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What's Changed

CRITICAL

• fix for 9AJ-260102

🧰 Other Changes

• feat(934100): added sequence for CVE-2025-55182 POCs by @​touchweb-vincent in #​4372
• feat(942440): reduce false positive by @​touchweb-vincent in #​4346
• fix(942431): reduce false positive with arrays in ARGS_NAMES by @​touchweb-vincent in #​4305
• fix: make regexen Rust's regex compatible by @​fgsch in #​4385
• refactor: drop older spelling variants by @​fgsch in #​4386

Special thanks to @​daytriftnewgen for responsible reporting 9AJ-260102

Full Changelog: coreruleset/coreruleset@v4.21.0...v4.22.0

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