Update devDependencies

package.json

@@ -98,7 +98,7 @@
  "postcss-combine-duplicated-selectors": "10.0.3",
  "postcss-import": "15.1.0",
  "postcss-jit-props": "1.0.13",
- "postcss-preset-env": "^8.0.0",
+ "postcss-preset-env": "^9.0.0",
  "prettier": "^2.8.1",
  "remark-cli": "^11.0.0",
  "remark-frontmatter": "^4.0.1",
@@ -127,8 +127,8 @@
  "retext-simplify": "^7.2.0",
  "retext-spell": "^5.3.0",
  "string-to-template-literal": "^2.0.0",
- "stylelint": "^14.16.1",
- "stylelint-config-standard": "^29.0.0",
+ "stylelint": "^15.0.0",
+ "stylelint-config-standard": "^34.0.0",
  "stylelint-media-use-custom-media": "^2.0.1",
  "stylelint-use-logical": "^2.0.0",
  "stylelint-use-nesting": "^4.0.0",