Bump @adobe/css-tools from 4.2.0 to 4.3.1 (#395)

Bumps [@adobe/css-tools](https://github.com/adobe/css-tools) from 4.2.0 to 4.3.1.
- [Changelog](https://github.com/adobe/css-tools/blob/main/History.md)
- [Commits](https://github.com/adobe/css-tools/commits)

---
updated-dependencies:
- dependency-name: "@adobe/css-tools"
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

yarn.lock

@@ -13,9 +13,9 @@ __metadata:
   linkType: hard
 
 "@adobe/css-tools@npm:^4.0.1":
-  version: 4.2.0
-  resolution: "@adobe/css-tools@npm:4.2.0"
-  checksum: dc5cc92ba3d562e7ffddb79d6d222c7e00b65f255fd2725b3d71490ff268844be322f917415d8c4ab39eca646343b632058db8bd5b1d646193fcc94d1d3e420b
+  version: 4.3.1
+  resolution: "@adobe/css-tools@npm:4.3.1"
+  checksum: ad43456379ff391132aff687ece190cb23ea69395e23c9b96690eeabe2468da89a4aaf266e4f8b6eaab53db3d1064107ce0f63c3a974e864f4a04affc768da3f
   languageName: node
   linkType: hard