build(deps): bump the npm_and_yarn group across 2 directories with 4 updates (#482)

Bumps the npm_and_yarn group with 3 updates in the / directory: [@babel/plugin-transform-modules-systemjs](https://github.com/babel/babel/tree/HEAD/packages/babel-plugin-transform-modules-systemjs), [basic-ftp](https://github.com/patrickjuchli/basic-ftp) and [postcss](https://github.com/postcss/postcss).
Bumps the npm_and_yarn group with 2 updates in the /site directory: [postcss](https://github.com/postcss/postcss) and [liquidjs](https://github.com/harttle/liquidjs).


Updates `@babel/plugin-transform-modules-systemjs` from 7.29.0 to 7.29.4
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/main/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/commits/v7.29.4/packages/babel-plugin-transform-modules-systemjs)

Updates `basic-ftp` from 5.2.1 to 5.3.1
- [Release notes](https://github.com/patrickjuchli/basic-ftp/releases)
- [Changelog](https://github.com/patrickjuchli/basic-ftp/blob/master/CHANGELOG.md)
- [Commits](patrickjuchli/basic-ftp@v5.2.1...v5.3.1)

Updates `postcss` from 8.5.6 to 8.5.15
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.5.6...8.5.15)

Updates `postcss` from 8.5.6 to 8.5.15
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.5.6...8.5.15)

Updates `liquidjs` from 10.25.2 to 10.27.0
- [Release notes](https://github.com/harttle/liquidjs/releases)
- [Changelog](https://github.com/harttle/liquidjs/blob/master/CHANGELOG.md)
- [Commits](harttle/liquidjs@v10.25.2...v10.27.0)

---
updated-dependencies:
- dependency-name: "@babel/plugin-transform-modules-systemjs"
  dependency-version: 7.29.4
  dependency-type: indirect
  dependency-group: npm_and_yarn
- dependency-name: basic-ftp
  dependency-version: 5.3.1
  dependency-type: indirect
  dependency-group: npm_and_yarn
- dependency-name: postcss
  dependency-version: 8.5.15
  dependency-type: indirect
  dependency-group: npm_and_yarn
- dependency-name: postcss
  dependency-version: 8.5.15
  dependency-type: direct:development
  dependency-group: npm_and_yarn
- dependency-name: liquidjs
  dependency-version: 10.27.0
  dependency-type: indirect
  dependency-group: npm_and_yarn
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package-lock.json

@@ -21,7 +21,7 @@
     "eleventy-sass": "^2.2.6",
     "html-minifier-terser": "^7.2.0",
     "markdown-it": "^14.1.0",
-    "postcss": "^8.5.6",
+    "postcss": "^8.5.15",
     "rimraf": "^6.1.2",
     "stylelint": "^16.26.1",
     "stylelint-config-twbs-bootstrap": "^16.1.0"