chore(deps-dev): bump the npm-deps group (#3)

Bumps the npm-deps group in /themes/devops-maturity with 2 updates: [sass](https://github.com/sass/dart-sass) and [postcss](https://github.com/postcss/postcss).


Updates `sass` from 1.89.1 to 1.89.2
- [Release notes](https://github.com/sass/dart-sass/releases)
- [Changelog](https://github.com/sass/dart-sass/blob/main/CHANGELOG.md)
- [Commits](sass/dart-sass@1.89.1...1.89.2)

Updates `postcss` from 8.5.4 to 8.5.5
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.5.4...8.5.5)

---
updated-dependencies:
- dependency-name: sass
  dependency-version: 1.89.2
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: npm-deps
- dependency-name: postcss
  dependency-version: 8.5.5
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: npm-deps
...

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

Author: dependabot[bot]

themes/devops-maturity/package-lock.json

@@ -25,8 +25,8 @@
   "devDependencies": {
     "autoprefixer": "10.4.21",
     "cssnano": "7.0.7",
-    "sass": "1.89.1",
-    "postcss": "8.5.4",
+    "sass": "1.89.2",
+    "postcss": "8.5.5",
     "postcss-cli": "11.0.1",
     "webpack": "5.99.9",
     "webpack-cli": "6.0.1"