Update dependency postcss-css-variables to v0.18.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
postcss-css-variables	^0.14.0 -> 0.18.0

---

Release Notes

MadLittleMods/postcss-css-variables

v0.18.0

Compare Source

• [breaking] Add basic postcss 8 support (older versions of PostCSS no longer compatible)
  • Thank you to @​delucis for the contribution

v0.17.0

Compare Source

• Expand variables in AtRule properties
  • Thank you to @​pvande for the contribution
  • Merged via Mergable version of #104 MadLittleMods/postcss-css-variables#121

v0.16.0

Compare Source

• Add ability to pass callback function to options.preserve to determine whether to preserve declaration
  • Thank you to @​ekatioz for the contribution

---

Configuration

📅 Schedule: 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, click this checkbox.

---

This PR has been generated by WhiteSource Renovate. View repository job log here.

[renovate]

⚠ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you check the rebase/retry checkbox if found above, or
• you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: yarn.lock

npm WARN deprecated request@2.88.2: request has been deprecated, see https://github.com/request/request/issues/3142
npm WARN deprecated har-validator@5.1.5: this library is no longer supported
npm WARN deprecated uuid@3.4.0: Please upgrade  to version 7 or higher.  Older versions may use Math.random() in certain circumstances, which is known to be problematic.  See https://v8.dev/blog/math-random for details.
lerna notice cli v4.0.0
error An unexpected error occurred: "https://registry.yarnpkg.com/@material-ui/icons/-/icons-4.11.2.tgz: ESOCKETTIMEDOUT".

[renovate]

Renovate Ignore Notification

As this PR has been closed unmerged, Renovate will now ignore this update (0.18.0). You will still receive a PR once a newer version is released, so if you wish to permanently ignore this dependency, please add it to the ignoreDeps array of your renovate config.

If this PR was closed by mistake or you changed your mind, you can simply rename this PR and you will soon get a fresh replacement PR opened.