fix: update postcss-mixins to v10

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
postcss-mixins	7.0.1 -> 10.0.0

---

Release Notes

postcss/postcss-mixins (postcss-mixins)

v10.0.0

Compare Source

• Added single-arg() support (by @​pciarach).
• Removed Node.js 16 and 14 support.

v9.0.4

Compare Source

• Moved to postcss-simple-vars 7.

v9.0.3

Compare Source

• Fixed hot reload (by Andrey Grandilevskiy).
• Fixed Windows support (by Andrey Grandilevskiy).

v9.0.2

Compare Source

• Fixed at-rules in @mixin-content in function mixins (by Vasily Polovnyov).
• Updated postcss-js.

v9.0.1

Compare Source

• Reduced package size.

v9.0.0

Compare Source

v8.1.0

Compare Source

v8.0.0

Compare Source

v7.0.3

Compare Source

• Fixed file pattern on Windows (by Gene Alyson Fortunado Torcende).

v7.0.2

Compare Source

• Fixed postcss-js loading (by Paul Welsh).

---

Configuration

📅 Schedule: 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 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.