chore(deps): update dependency cross-env to v5.2.1

package.json

@@ -78,7 +78,7 @@
     "compression-webpack-plugin": "2.0.0",
     "connect": "3.7.0",
     "copy-webpack-plugin": "4.6.0",
-    "cross-env": "5.2.0",
+    "cross-env": "5.2.1",
     "css-loader": "1.0.1",
     "eslint": "4.19.1",
     "eslint-friendly-formatter": "4.0.1",

yarn.lock

@@ -3417,13 +3417,12 @@ create-hmac@^1.1.0, create-hmac@^1.1.4, create-hmac@^1.1.7:
     safe-buffer "^5.0.1"
     sha.js "^2.4.8"
-cross-env@5.2.0:
-  version "5.2.0"
-  resolved "https://registry.yarnpkg.com/cross-env/-/cross-env-5.2.0.tgz#6ecd4c015d5773e614039ee529076669b9d126f2"
-  integrity sha512-jtdNFfFW1hB7sMhr/H6rW1Z45LFqyI431m3qU6bFXcQ3Eh7LtBuG3h74o7ohHZ3crrRkkqHlo4jYHFPcjroANg==
+cross-env@5.2.1:
+  version "5.2.1"
+  resolved "https://registry.yarnpkg.com/cross-env/-/cross-env-5.2.1.tgz#b2c76c1ca7add66dc874d11798466094f551b34d"
+  integrity sha512-1yHhtcfAd1r4nwQgknowuUNfIT9E8dOMMspC36g45dN+iD1blloi7xp8X/xAIDnjHWyt1uQ8PHk2fkNaym7soQ==
   dependencies:
     cross-spawn "^6.0.5"
-    is-windows "^1.0.0"
 cross-spawn@^5.0.1, cross-spawn@^5.1.0:
   version "5.1.0"
@@ -6276,7 +6275,7 @@ is-whitespace@^0.3.0:
   resolved "https://registry.yarnpkg.com/is-whitespace/-/is-whitespace-0.3.0.tgz#1639ecb1be036aec69a54cbb401cfbed7114ab7f"
   integrity sha512-RydPhl4S6JwAyj0JJjshWJEFG6hNye3pZFBRZaTUfZFwGHxzppNaNOVgQuS/E/SlhrApuMXrpnK1EEIXfdo3Dg==
-is-windows@^1.0.0, is-windows@^1.0.1, is-windows@^1.0.2:
+is-windows@^1.0.1, is-windows@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/is-windows/-/is-windows-1.0.2.tgz#d1850eb9791ecd18e6182ce12a30f396634bb19d"
   integrity sha512-eXK1UInq2bPmjyX6e3VHIzMLobc4J94i4AWn+Hpq3OU5KkrRC96OAcR3PRJ/pGu6m8TRnBHP9dkXQVsT/COVIA==