Update dependency acorn to v7.1.1 (#337)

Author: renovate-bot

package.json

@@ -36,7 +36,7 @@
   "dependencies": {
     "@ampproject/remapping": "0.2.0",
     "@kristoferbaxter/estree-walker": "2.0.0",
-    "acorn": "7.1.0",
+    "acorn": "7.1.1",
     "acorn-walk": "7.1.1",
     "google-closure-compiler": "20200204.0.0",
     "magic-string": "0.25.6",

yarn.lock

@@ -454,7 +454,12 @@ [email protected]:
   resolved "https://registry.yarnpkg.com/acorn-walk/-/acorn-walk-7.1.1.tgz#345f0dffad5c735e7373d2fec9a1023e6a44b83e"
   integrity sha512-wdlPY2tm/9XBr7QkKlq0WQVgiuGTX6YWPyRyBviSoScBuLfTVQhvwg6wJ369GJ/1nPfTLMfnrFIfjqVg6d+jQQ==
 
-[email protected], acorn@^7.1.0:
+[email protected]:
+  version "7.1.1"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-7.1.1.tgz#e35668de0b402f359de515c5482a1ab9f89a69bf"
+  integrity sha512-add7dgA5ppRPxCFJoAGfMDi7PIBXq1RtGo7BhbLaxwrXPOmw8gq48Y9ozT01hUKy9byMjlR20EJhu5zlkErEkg==
+
+acorn@^7.1.0:
   version "7.1.0"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-7.1.0.tgz#949d36f2c292535da602283586c2477c57eb2d6c"
   integrity sha512-kL5CuoXA/dgxlBbVrflsflzQ3PAas7RYZB52NOm/6839iVYJgKMJ3cQJD+t2i5+qFa8h3MDpEOJiS64E8JLnSQ==