Bump acorn from 6.0.7 to 6.1.0

Bumps [acorn](https://github.com/acornjs/acorn) from 6.0.7 to 6.1.0.
- [Release notes](https://github.com/acornjs/acorn/releases)
- [Commits](https://github.com/acornjs/acorn/compare/6.0.7...walk-6.1.0)

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

package-lock.json

@@ -1046,9 +1046,9 @@
       "dev": true
     },
     "acorn": {
-      "version": "6.0.7",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.0.7.tgz",
-      "integrity": "sha512-HNJNgE60C9eOTgn974Tlp3dpLZdUr+SoxxDwPaY9J/kDNOLQTkaDgwBUXAF4SSsrAwD9RpdxuHK/EbuF+W9Ahw==",
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.1.0.tgz",
+      "integrity": "sha512-MW/FjM+IvU9CgBzjO3UIPCE2pyEwUsoFl+VGdczOPEdxfGFjuKny/gN54mOuX7Qxmb9Rg9MCn2oKiSUeW+pjrw==",
       "dev": true
     },
     "acorn-dynamic-import": {

package.json

@@ -58,7 +58,7 @@
 		"@babel/plugin-syntax-dynamic-import": "^7.2.0",
 		"@babel/preset-env": "^7.3.1",
 		"@vue/test-utils": "^1.0.0-beta.29",
-		"acorn": "^6.0.7",
+		"acorn": "^6.1.0",
 		"babel-eslint": "^10.0.1",
 		"babel-jest": "^24.0.0",
 		"babel-loader": "^8.0.5",