Bump acorn from 5.7.3 to 5.7.4

Bumps [acorn](https://github.com/acornjs/acorn) from 5.7.3 to 5.7.4.
- [Release notes](https://github.com/acornjs/acorn/releases)
- [Commits](acornjs/acorn@5.7.3...5.7.4)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

yarn.lock

@@ -1744,9 +1744,9 @@ acorn-walk@^6.0.1:
   integrity sha512-7evsyfH1cLOCdAzZAd43Cic04yKydNx0cF+7tiA19p1XnLLPU4dpCQOqpjqwokFe//vS0QqfqqjCS2JkiIs0cA==
 
 acorn@^5.0.0, acorn@^5.5.3:
-  version "5.7.3"
-  resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.7.3.tgz#67aa231bf8812974b85235a96771eb6bd07ea279"
-  integrity sha512-T/zvzYRfbVojPWahDsE5evJdHb3oJoQfFbsrKM7w5Zcs++Tr257tia3BmMP8XYVjp1S9RZXQMh7gao96BlqZOw==
+  version "5.7.4"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.7.4.tgz#3e8d8a9947d0599a1796d10225d7432f4a4acf5e"
+  integrity sha512-1D++VG7BhrtvQpNbBzovKNc1FLGGEE/oGe7b9xJm/RFHMBeUaUGpluV9RLjZa47YFdPcDAenEYuq9pQPcMdLJg==
 
 acorn@^6.0.1, acorn@^6.0.4:
   version "6.3.0"
@@ -8488,12 +8488,7 @@ [email protected]:
     range-parser "~1.2.1"
     statuses "~1.5.0"
 
-[email protected]:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/serialize-to-js/-/serialize-to-js-3.0.1.tgz#7bece9cb910c5ee1433f56500db4a5303bca6a02"
-  integrity sha512-TokHD6rY0yQxMmZCjeL8Oj+XuQK6uEx8JnBjt7PuqwWa2qY79Wb/KyhEDduTUC8Gl3S7c40jefWve7f5t4L8Lw==
-
-serialize-to-js@^3.0.0:
+[email protected], serialize-to-js@^3.0.0:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/serialize-to-js/-/serialize-to-js-3.0.1.tgz#7bece9cb910c5ee1433f56500db4a5303bca6a02"
   integrity sha512-TokHD6rY0yQxMmZCjeL8Oj+XuQK6uEx8JnBjt7PuqwWa2qY79Wb/KyhEDduTUC8Gl3S7c40jefWve7f5t4L8Lw==