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[bot] <support@github.com>

package-lock.json

@@ -4988,9 +4988,9 @@
 			}
 		},
 		"acorn": {
-			"version": "7.3.1",
+			"version": "7.4.0",
-			"resolved": "https://registry.npmjs.org/acorn/-/acorn-7.3.1.tgz",
+			"resolved": "https://registry.npmjs.org/acorn/-/acorn-7.4.0.tgz",
-			"integrity": "sha512-tLc0wSnatxAQHVHUapaHdz72pi9KUyHjq5KyHjGg9Y8Ifdc79pTh2XvI6I1/chZbnM7QtNKzh66ooDogPZSleA==",
+			"integrity": "sha512-+G7P8jJmCHr+S+cLfQxygbWhXy+8YTVGzAkpEbcLo2mLoL7tij/VG41QSHACSf5QgYRhMZYHuNc6drJaO0Da+w==",
 			"dev": true
 		},
 		"acorn-globals": {
@@ -13978,23 +13978,6 @@
 				}
 			}
 		},
-		"jest-serializer": {
-			"version": "26.1.0",
-			"resolved": "https://registry.npmjs.org/jest-serializer/-/jest-serializer-26.1.0.tgz",
-			"integrity": "sha512-eqZOQG/0+MHmr25b2Z86g7+Kzd5dG9dhCiUoyUNJPgiqi38DqbDEOlHcNijyfZoj74soGBohKBZuJFS18YTJ5w==",
-			"dev": true,
-			"requires": {
-				"graceful-fs": "^4.2.4"
-			},
-			"dependencies": {
-				"graceful-fs": {
-					"version": "4.2.4",
-					"resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.4.tgz",
-					"integrity": "sha512-WjKPNJF79dtJAVniUlGGWHYGz2jWxT6VhN/4m1NdkbZ2nOsEF+cI1Edgql5zCRhs/VsQYRvrXctxktVXZUkixw==",
-					"dev": true
-				}
-			}
-		},
 		"jest-serializer-vue": {
 			"version": "2.0.2",
 			"resolved": "https://registry.npmjs.org/jest-serializer-vue/-/jest-serializer-vue-2.0.2.tgz",

package.json

@@ -74,7 +74,7 @@
 		"@nextcloud/eslint-plugin": "^1.4.0",
 		"@nextcloud/webpack-vue-config": "^1.1.0",
 		"@vue/test-utils": "^1.0.3",
-		"acorn": "^7.3.1",
+		"acorn": "^7.4.0",
 		"babel-eslint": "^10.1.0",
 		"babel-jest": "^26.2.2",
 		"babel-loader": "^8.1.0",