Bump postcss-import from 14.1.0 to 15.0.0 (#2235)

Bumps [postcss-import](https://github.com/postcss/postcss-import) from 14.1.0 to 15.0.0.
- [Release notes](https://github.com/postcss/postcss-import/releases)
- [Changelog](https://github.com/postcss/postcss-import/blob/master/CHANGELOG.md)
- [Commits](postcss/postcss-import@14.1.0...15.0.0)

---
updated-dependencies:
- dependency-name: postcss-import
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

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

Author: dependabot[bot]

package.json

@@ -65,7 +65,7 @@
     "js-yaml": "4.1.0",
     "postcss": "8.4.16",
     "postcss-calc": "8.2.4",
-    "postcss-import": "14.1.0",
+    "postcss-import": "15.0.0",
     "postcss-load-config": "4.0.1",
     "postcss-scss": "4.0.4",
     "postcss-simple-vars": "6.0.3",

yarn.lock

@@ -4564,10 +4564,10 @@ postcss-custom-properties@^12.1.6:
   dependencies:
     postcss-value-parser "^4.2.0"
 
-postcss-import@14.1.0:
-  version "14.1.0"
-  resolved "https://registry.yarnpkg.com/postcss-import/-/postcss-import-14.1.0.tgz#a7333ffe32f0b8795303ee9e40215dac922781f0"
-  integrity sha512-flwI+Vgm4SElObFVPpTIT7SU7R3qk2L7PyduMcokiaVKuWv9d/U+Gm/QAd8NDLuykTWTkcrjOeD2Pp1rMeBTGw==
+postcss-import@15.0.0:
+  version "15.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-import/-/postcss-import-15.0.0.tgz#0b66c25fdd9c0d19576e63c803cf39e4bad08822"
+  integrity sha512-Y20shPQ07RitgBGv2zvkEAu9bqvrD77C9axhj/aA1BQj4czape2MdClCExvB27EwYEJdGgKZBpKanb0t1rK2Kg==
   dependencies:
     postcss-value-parser "^4.0.0"
     read-cache "^1.0.0"