chore: Bump gulp-postcss from 9.1.0 to 10.0.0 (#804)

Bumps [gulp-postcss](https://github.com/postcss/gulp-postcss) from 9.1.0 to 10.0.0.
- [Release notes](https://github.com/postcss/gulp-postcss/releases)
- [Commits](https://github.com/postcss/gulp-postcss/compare/9.1.0...10.0.0)

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

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

package.json

@@ -27,7 +27,7 @@
     "gulp-concat": "^2.6.1",
     "gulp-imagemin": "^9.0.0",
     "gulp-notify": "^4.0.0",
-    "gulp-postcss": "^9.1.0",
+    "gulp-postcss": "^10.0.0",
     "gulp-rename": "^2.0.0",
     "gulp-run": "^1.7.1",
     "gulp-sass": "^5.1.0",

yarn.lock

@@ -3762,10 +3762,10 @@ gulp-plugin-extras@^0.2.2:
     chalk "^5.3.0"
     easy-transform-stream "^1.0.1"
 
-gulp-postcss@^9.1.0:
-  version "9.1.0"
-  resolved "https://registry.yarnpkg.com/gulp-postcss/-/gulp-postcss-9.1.0.tgz#0d317134d40d9565f265bd32c7f71605a54cadd8"
-  integrity sha512-a843mcKPApfeI987uqQbc8l50xXeWIXBsiVvYxtCI5XtVAMzTi/HnU2qzQpGwkB/PAOfsLV8OsqDv2iJZ9qvdw==
+gulp-postcss@^10.0.0:
+  version "10.0.0"
+  resolved "https://registry.yarnpkg.com/gulp-postcss/-/gulp-postcss-10.0.0.tgz#a88d7c6602f8a8c94aaa9f28ac3a68def00c7ada"
+  integrity sha512-z1RF2RJEX/BvFsKN11PXai8lRmihZTiHnlJf7Zu8uHaA/Q7Om4IeN8z1NtMAW5OiLwUY02H0DIFl9tHl0CNSgA==
   dependencies:
     fancy-log "^2.0.0"
     plugin-error "^2.0.1"