Build(deps-dev): Bump the dev dependencies with 2 updates (#42395)

Bumps the development-dependencies group with 2 updates: [postcss](https://github.com/postcss/postcss) and [terser](https://github.com/terser/terser).

Updates `postcss` from 8.5.10 to 8.5.12
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.5.10...8.5.12)

Updates `terser` from 5.46.1 to 5.46.2
- [Changelog](https://github.com/terser/terser/blob/master/CHANGELOG.md)
- [Commits](terser/terser@v5.46.1...v5.46.2)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.12
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: development-dependencies
- dependency-name: terser
  dependency-version: 5.46.2
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: development-dependencies
...

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

Author: dependabot[bot]

package-lock.json

@@ -182,7 +182,7 @@
     "npm-run-all2": "^8.0.4",
     "pagefind": "^1.5.0",
     "playwright": "^1.59.1",
-    "postcss": "^8.5.10",
+    "postcss": "^8.5.12",
     "postcss-cli": "^11.0.1",
     "prettier": "^3.8.3",
     "prettier-plugin-astro": "^0.14.1",
@@ -198,7 +198,7 @@
     "stylelint": "16.26.1",
     "stylelint-config-twbs-bootstrap": "^16.1.0",
     "stylelint-order": "^8.1.1",
-    "terser": "^5.46.1",
+    "terser": "^5.46.2",
     "unist-util-visit": "^5.1.0",
     "yaml": "^2.8.3",
     "zod": "^4.3.6"