[RUN-0000] Update dependency postcss to v8.5.22

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
postcss (source)	8.5.20 → 8.5.22

---

Release Notes

postcss/postcss (postcss)

v8.5.22

Compare Source

• Fixed custom property losing semicolon before a comment (by @​sarathfrancis90).

v8.5.21

Compare Source

• Fixed childless at-rule losing semicolon before comment (by @​sarathfrancis90).
• Fixed docs (by @​isker).

---

Configuration

📅 Schedule: (UTC)

• Branch creation
  • At any time (no schedule defined)
• Automerge
  • At any time (no schedule defined)

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, 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 was generated by Mend Renovate. View the repository job log.

[renovate]

ℹ️ Artifact update notice

File name: package-lock.json

npm --before could not be enforced because existing locked packages were published after the minimumReleaseAge cutoff. This will resolve after the next lock file maintenance run.