Bump acorn from 7.4.1 to 8.12.1

Bumps [acorn](https://github.com/acornjs/acorn) from 7.4.1 to 8.12.1.
- [Commits](acornjs/acorn@7.4.1...8.12.1)

---
updated-dependencies:
- dependency-name: acorn
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

package.json

@@ -14,7 +14,7 @@
   "dependencies": {
     "@faker-js/faker": "^8.4.1",
     "@ministryofjustice/frontend": "^1.6.6",
-    "acorn": "^7.1.1",
+    "acorn": "^8.12.1",
     "ansi-colors": "^4.1.1",
     "basic-auth": "^2.0.0",
     "basic-auth-connect": "^1.0.0",