build: update dependency postcss to v8.4.31 [security]

[angular-robot]

This PR contains the following updates:

Package	Type	Update	Change
postcss (source)	dependencies	patch	8.4.30 -> 8.4.31

GitHub Vulnerability Alerts

CVE-2023-44270

An issue was discovered in PostCSS before 8.4.31. It affects linters using PostCSS to parse external Cascading Style Sheets (CSS). There may be \r discrepancies, as demonstrated by @font-face{ font:(\r/*);} in a rule.

---

Release Notes

postcss/postcss (postcss)

v8.4.31

Compare Source

• Fixed \r parsing to fix CVE-2023-44270.

---

Configuration

📅 Schedule: Branch creation - "" in timezone America/Tijuana, 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 has been generated by Renovate Bot.

Closes #25944

[angular-automatic-lock-bot]

This issue has been automatically locked due to inactivity.
Please file a new issue if you are encountering a similar or related problem.

Read more about our automatic conversation locking policy.

_{This action has been performed automatically by a bot.}