Bump acorn from 7.3.1 to 7.4.0

Bumps [acorn](https://github.com/acornjs/acorn) from 7.3.1 to 7.4.0.
- [Release notes](https://github.com/acornjs/acorn/releases)
- [Commits](https://github.com/acornjs/acorn/compare/7.3.1...7.4.0)

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

package-lock.json

@@ -5253,9 +5253,9 @@
 			"dev": true
 		},
 		"acorn": {
-			"version": "7.3.1",
-			"resolved": "https://registry.npmjs.org/acorn/-/acorn-7.3.1.tgz",
-			"integrity": "sha512-tLc0wSnatxAQHVHUapaHdz72pi9KUyHjq5KyHjGg9Y8Ifdc79pTh2XvI6I1/chZbnM7QtNKzh66ooDogPZSleA==",
+			"version": "7.4.0",
+			"resolved": "https://registry.npmjs.org/acorn/-/acorn-7.4.0.tgz",
+			"integrity": "sha512-+G7P8jJmCHr+S+cLfQxygbWhXy+8YTVGzAkpEbcLo2mLoL7tij/VG41QSHACSf5QgYRhMZYHuNc6drJaO0Da+w==",
 			"dev": true
 		},
 		"acorn-globals": {

package.json

@@ -66,7 +66,7 @@
 		"@nextcloud/browserslist-config": "^1.0.0",
 		"@nextcloud/eslint-config": "^2.1.0",
 		"@nextcloud/eslint-plugin": "^1.4.0",
-		"acorn": "^7.1.1",
+		"acorn": "^7.4.0",
 		"babel-eslint": "^10.0.3",
 		"babel-jest": "^26.3.0",
 		"babel-loader": "^8.0.6",