Update dependency react-helmet to v6

package.json

@@ -39,7 +39,7 @@
     "react-chartjs-2": "2.7.4",
     "react-dom": "16.6.3",
     "react-emotion": "9.2.12",
-    "react-helmet": "5.2.0",
+    "react-helmet": "6.1.0",
     "react-slick": "0.23.2",
     "react-typography": "0.16.13",
     "slick-carousel": "1.8.1",

yarn.lock

@@ -8058,6 +8058,15 @@ prop-types@^15.5.10, prop-types@^15.5.4, prop-types@^15.5.8, prop-types@^15.6.1,
     loose-envify "^1.3.1"
     object-assign "^4.1.1"
 
+prop-types@^15.7.2:
+  version "15.7.2"
+  resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.7.2.tgz#52c41e75b8c87e72b9d9360e0206b99dcbffa6c5"
+  integrity sha512-8QQikdH7//R2vurIJSutZ1smHYTcLpRWEOlHnzcWHmBYrOGUysKwSsrC89BCiFj3CbrfJ/nXFdJepOVrY1GCHQ==
+  dependencies:
+    loose-envify "^1.4.0"
+    object-assign "^4.1.1"
+    react-is "^16.8.1"
+
 proxy-addr@~2.0.4:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/proxy-addr/-/proxy-addr-2.0.4.tgz#ecfc733bf22ff8c6f407fa275327b9ab67e48b93"
@@ -8280,7 +8289,22 @@ react-error-overlay@^3.0.0:
   resolved "https://registry.yarnpkg.com/react-error-overlay/-/react-error-overlay-3.0.0.tgz#c2bc8f4d91f1375b3dad6d75265d51cd5eeaf655"
   integrity sha512-XzgvowFrwDo6TWcpJ/WTiarb9UI6lhA4PMzS7n1joK3sHfBBBOQHUc0U4u57D6DWO9vHv6lVSWx2Q/Ymfyv4hw==
 
-[email protected], react-helmet@^5.2.0:
+react-fast-compare@^3.1.1:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/react-fast-compare/-/react-fast-compare-3.2.0.tgz#641a9da81b6a6320f270e89724fb45a0b39e43bb"
+  integrity sha512-rtGImPZ0YyLrscKI9xTpV8psd6I8VAtjKCzQDlzyDvqJA8XOW78TXYQwNRNd8g8JZnDu8q9Fu/1v4HPAVwVdHA==
+
+[email protected]:
+  version "6.1.0"
+  resolved "https://registry.yarnpkg.com/react-helmet/-/react-helmet-6.1.0.tgz#a750d5165cb13cf213e44747502652e794468726"
+  integrity sha512-4uMzEY9nlDlgxr61NL3XbKRy1hEkXmKNXhjbAIOVw5vcFrsdYbH2FEwcNyWvWinl103nXgzYNlns9ca+8kFiWw==
+  dependencies:
+    object-assign "^4.1.1"
+    prop-types "^15.7.2"
+    react-fast-compare "^3.1.1"
+    react-side-effect "^2.1.0"
+
+react-helmet@^5.2.0:
   version "5.2.0"
   resolved "https://registry.yarnpkg.com/react-helmet/-/react-helmet-5.2.0.tgz#a81811df21313a6d55c5f058c4aeba5d6f3d97a7"
   integrity sha1-qBgR3yExOm1VxfBYxK66XW89l6c=
@@ -8302,6 +8326,11 @@ react-hot-loader@^4.1.0:
     react-lifecycles-compat "^3.0.4"
     shallowequal "^1.0.2"
 
+react-is@^16.8.1:
+  version "16.13.1"
+  resolved "https://registry.yarnpkg.com/react-is/-/react-is-16.13.1.tgz#789729a4dc36de2999dc156dd6c1d9c18cea56a4"
+  integrity sha512-24e6ynE2H+OKt4kqsOvNd8kBpV65zoxbA4BVsEOB3ARVWQki/DHzaUoC5KuON/BiccDaCCTZBuOcfZs70kR8bQ==
+
 react-lifecycles-compat@^3.0.4:
   version "3.0.4"
   resolved "https://registry.yarnpkg.com/react-lifecycles-compat/-/react-lifecycles-compat-3.0.4.tgz#4f1a273afdfc8f3488a8c516bfda78f872352362"
@@ -8323,6 +8352,11 @@ react-side-effect@^1.1.0:
     exenv "^1.2.1"
     shallowequal "^1.0.1"
 
+react-side-effect@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/react-side-effect/-/react-side-effect-2.1.0.tgz#1ce4a8b4445168c487ed24dab886421f74d380d3"
+  integrity sha512-IgmcegOSi5SNX+2Snh1vqmF0Vg/CbkycU9XZbOHJlZ6kMzTmi3yc254oB1WCkgA7OQtIAoLmcSFuHTc/tlcqXg==
+
 [email protected]:
   version "0.23.2"
   resolved "https://registry.yarnpkg.com/react-slick/-/react-slick-0.23.2.tgz#8d8bdbc77a6678e8ad36f50c32578c7c0f1c54f6"