Bump typescript from 3.3.4000 to 3.4.3

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 3.3.4000 to 3.4.3.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](microsoft/TypeScript@v3.3.4000...v3.4.3)

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

Author: dependabot-support

package.json

@@ -42,7 +42,7 @@
     "tslint-config-airbnb": "^5.11.1",
     "tslint-config-prettier": "^1.18.0",
     "tslint-react": "^3.6.0",
-    "typescript": "^3.3.4000"
+    "typescript": "^3.4.3"
   },
   "dependencies": {
     "aws-sdk": "^2.424.0",

yarn.lock

@@ -5401,10 +5401,10 @@ [email protected]:
     yargonaut "^1.1.2"
     yargs "^13.2.1"
 
-typescript@^3.3.4000:
-  version "3.3.4000"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.3.4000.tgz#76b0f89cfdbf97827e1112d64f283f1151d6adf0"
-  integrity sha512-jjOcCZvpkl2+z7JFn0yBOoLQyLoIkNZAs/fYJkUG6VKy6zLPHJGfQJYFHzibB6GJaF/8QrcECtlQ5cpvRHSMEA==
+typescript@^3.4.3:
+  version "3.4.3"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.4.3.tgz#0eb320e4ace9b10eadf5bc6103286b0f8b7c224f"
+  integrity sha512-FFgHdPt4T/duxx6Ndf7hwgMZZjZpB+U0nMNGVCYPq0rEzWKjEDobm4J6yb3CS7naZ0yURFqdw9Gwc7UOh/P9oQ==
 
 ua-parser-js@^0.7.18:
   version "0.7.19"