Bump autoprefixer from 10.4.19 to 10.4.20 in /dthm4kaiako

Bumps [autoprefixer](https://github.com/postcss/autoprefixer) from 10.4.19 to 10.4.20.
- [Release notes](https://github.com/postcss/autoprefixer/releases)
- [Changelog](https://github.com/postcss/autoprefixer/blob/main/CHANGELOG.md)
- [Commits](postcss/autoprefixer@10.4.19...10.4.20)

---
updated-dependencies:
- dependency-name: autoprefixer
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

dthm4kaiako/package.json

@@ -5,7 +5,7 @@
     "dependencies": {},
     "devDependencies": {
         "ansi-colors": "4.1.3",
-        "autoprefixer": "10.4.19",
+        "autoprefixer": "10.4.20",
         "bootstrap": "4.6.0",
         "browserify": "17.0.0",
         "child_process": "1.0.2",