Bump autoprefixer from 10.2.5 to 10.2.6

Bumps [autoprefixer](https://github.com/postcss/autoprefixer) from 10.2.5 to 10.2.6.
- [Release notes](https://github.com/postcss/autoprefixer/releases)
- [Changelog](https://github.com/postcss/autoprefixer/blob/main/CHANGELOG.md)
- [Commits](postcss/autoprefixer@10.2.5...10.2.6)

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

Author: dependabot[bot]

package.json

@@ -12,7 +12,7 @@
   "devDependencies": {
     "@lodder/grunt-postcss": "3.0.1",
     "@squoosh/cli": "0.6.4",
-    "autoprefixer": "10.2.5",
+    "autoprefixer": "10.2.6",
     "cssnano": "5.0.4",
     "grunt": "1.4.1",
     "grunt-cli": "1.4.3",