chore(deps): update dependency postcss to v8.5.15

This MR contains the following updates:

Package	Change	Age	Confidence
postcss (source)	8.5.6 → 8.5.15

---

Release Notes

postcss/postcss (postcss)

v8.5.15

Compare Source

• Fixed declaration parsing performance (by @​homanp).

v8.5.14

Compare Source

• Fixed custom syntax regression (by @​43081j).

v8.5.13

Compare Source

• Fixed postcss-scss commend regression.

v8.5.12

Compare Source

• Fixed reading any file via user-generated CSS.
• Added opts.unsafeMap to disable checks.

v8.5.11

Compare Source

• Fixed nested brackets parsing performance (by @​offset).

v8.5.10

Compare Source

• Fixed XSS via unescaped </style> in non-bundler cases (by @​TharVid).

v8.5.9

Compare Source

• Speed up source map encoding paring in case of the error.

v8.5.8

Compare Source

• Fixed Processor#version.

v8.5.7

Compare Source

• Improved source map annotation cleaning performance (by CodeAnt AI).

---

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 MR is behind base branch, or you tick the rebase/retry checkbox.

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

---

• If you want to rebase/retry this MR, check this box

---

This MR has been generated by Mend Renovate.