Bump acorn from 6.2.0 to 6.4.1

yarn.lockmodified+3-3

Changes to yarn.lock

		⋯1,127 linesShow the 1,127 lines above this hunk@@ -1128,9 +1128,9 @@ accepts@^1.3.5, accepts@~1.3.7:
1128	1128	negotiator "0.6.2"
1129	1129
1130	1130	acorn@^6.2.0:
1131		- version "6.2.1"
1132		- resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.2.1.tgz#3ed8422d6dec09e6121cc7a843ca86a330a86b51"
1133		- integrity sha512-JD0xT5FCRDNyjDda3Lrg/IxFscp9q4tiYtxE1/nOzlKCk7hIRuYjhq1kCNkbPjMRMZuFq20HNQn1I9k8Oj0E+Q==
	1131	+ version "6.4.1"
	1132	+ resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.4.1.tgz#531e58ba3f51b9dacb9a6646ca4debf5b14ca474"
	1133	+ integrity sha512-ZVA9k326Nwrj3Cj9jlh3wGFutC2ZornPNARZwsNYqQYgN0EsV2d53w5RN/co65Ohn4sUAUtb1rSUAOD6XN9idA==
1134	1134
1135	1135	ajv-errors@^1.0.0:
1136	1136	version "1.0.1"