Update lock file.

In attempt to fix issues with high CPU usage of
VS Code due to bug in @types/styled-components, I
removed the node_modules folder and ran `yarn`
which updated this lock file.

More info:
#174 (comment)

yarn.lock

@@ -1211,7 +1211,12 @@
   resolved "https://registry.yarnpkg.com/@types/mousetrap/-/mousetrap-1.6.2.tgz#5f48bdbd28c8a447167263ae436488f1d8be072d"
   integrity sha512-m67PUdzoHJGmYJ6Fno4iXocl+azw9cuz8tdUG21M04UzMRUT1YfxPIIIt3lQkXLMGwlGSKXYNGxCOMxKlGegIw==
 
-"@types/node@*", "@types/node@11.13.2":
+"@types/node@*":
+  version "11.13.4"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-11.13.4.tgz#f83ec3c3e05b174b7241fadeb6688267fe5b22ca"
+  integrity sha512-+rabAZZ3Yn7tF/XPGHupKIL5EcAbrLxnTr/hgQICxbeuAfWtT0UZSfULE+ndusckBItcv4o6ZeOJplQikVcLvQ==
+
+"@types/node@11.13.2":
   version "11.13.2"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-11.13.2.tgz#dc85dde46aa8740bb4aed54b8104250f8f849503"
   integrity sha512-HOtU5KqROKT7qX/itKHuTtt5fV0iXbheQvrgbLNXFJQBY/eh+VS5vmmTAVlo3qIGMsypm0G4N1t2AXjy1ZicaQ==
@@ -1248,9 +1253,9 @@
     "@types/react" "*"
 
 "@types/react-native@*":
-  version "0.57.42"
-  resolved "https://registry.yarnpkg.com/@types/react-native/-/react-native-0.57.42.tgz#06ad92cd1378146402b7667de13cb7b935d194d6"
-  integrity sha512-Ms4RI8Oyi8HOIwlteFhgRE7TA9chP/mliLeJCzjKBOywYpile5TrXQF8lRDYzcC1zyTyoopu/u8VMlF+FS7VnA==
+  version "0.57.43"
+  resolved "https://registry.yarnpkg.com/@types/react-native/-/react-native-0.57.43.tgz#a4d3fa7be905a8e28b7682220335dacefffd816f"
+  integrity sha512-hYt5a+Kj/Cy0102b+WZpNhnm1AWNz6HnVYwk41BSDZpDoJweo1BuJv1FStd6ClzCdTPJlfImF8ZqpM2xDoO2aA==
   dependencies:
     "@types/prop-types" "*"
     "@types/react" "*"