fix: package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-POSTCSS-5926692

package.json

@@ -38,7 +38,7 @@
  ]
  },
  "dependencies": {
- "autoprefixer": "^9.7.1",
+ "autoprefixer": "^10.0.0",
  "cheerio": "^0.22.0",
  "handlebars": "^4.5.1",
  "jstransformer-handlebars": "^1.1.0",
@@ -61,7 +61,7 @@
  "node-version-data": "^1.1.0",
  "npm-run-all": "^4.1.5",
  "octonode": "^0.9.5",
- "postcss": "^7.0.21",
+ "postcss": "^8.4.31",
  "request": "^2.88.0",
  "semver": "^6.3.0",
  "strftime": "^0.10.0"
@@ -80,8 +80,8 @@
  "remark-preset-lint-node": "^1.10.1",
  "st": "^1.2.2",
  "standard": "^14.3.1",
- "stylelint": "^11.1.1",
- "stylelint-config-twbs-bootstrap": "^0.9.0",
+ "stylelint": "^14.0.0",
+ "stylelint-config-twbs-bootstrap": "^3.0.0",
  "tape": "^4.11.0",
  "vnu-jar": "19.9.4"
  }