Bump acorn from 7.1.0 to 7.1.1

Bumps [acorn](https://github.com/acornjs/acorn) from 7.1.0 to 7.1.1.
- [Release notes](https://github.com/acornjs/acorn/releases)
- [Commits](https://github.com/acornjs/acorn/compare/7.1.0...7.1.1)

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

package-lock.json

@@ -46,9 +46,9 @@
       }
     },
     "acorn": {
-      "version": "7.1.0",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.1.0.tgz",
-      "integrity": "sha512-kL5CuoXA/dgxlBbVrflsflzQ3PAas7RYZB52NOm/6839iVYJgKMJ3cQJD+t2i5+qFa8h3MDpEOJiS64E8JLnSQ==",
+      "version": "7.1.1",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.1.1.tgz",
+      "integrity": "sha512-add7dgA5ppRPxCFJoAGfMDi7PIBXq1RtGo7BhbLaxwrXPOmw8gq48Y9ozT01hUKy9byMjlR20EJhu5zlkErEkg==",
       "dev": true
     },
     "ansi-styles": {
@@ -273,6 +273,14 @@
         "rollup-pluginutils": "^2.8.1",
         "serialize-javascript": "^1.7.0",
         "terser": "^4.1.0"
+      },
+      "dependencies": {
+        "serialize-javascript": {
+          "version": "1.9.1",
+          "resolved": "https://registry.npmjs.org/serialize-javascript/-/serialize-javascript-1.9.1.tgz",
+          "integrity": "sha512-0Vb/54WJ6k5v8sSWN09S0ora+Hnr+cX40r9F170nT+mSkaxltoE/7R3OrIdBSUv1OoiobH1QoWQbCnAO+e8J1A==",
+          "dev": true
+        }
       }
     },
     "rollup-pluginutils": {
@@ -284,12 +292,6 @@
         "estree-walker": "^0.6.1"
       }
     },
-    "serialize-javascript": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/serialize-javascript/-/serialize-javascript-1.8.0.tgz",
-      "integrity": "sha512-3tHgtF4OzDmeKYj6V9nSyceRS0UJ3C7VqyD2Yj28vC/z2j6jG5FmFGahOKMD9CrglxTm3tETr87jEypaYV8DUg==",
-      "dev": true
-    },
     "source-map": {
       "version": "0.6.1",
       "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",