fix: Upgrade TS to get type definitions for viewportHeight

Cant upgrade any higher than this, or we hit this issue: que-etc/resize-observer-polyfill#85

Author: tommoor

package.json

@@ -99,7 +99,7 @@
     "react-dom": "^17.0.0",
     "source-map-loader": "^0.2.4",
     "styled-components": "^5.2.1",
-    "typescript": "3.9.7",
+    "typescript": "4.1.6",
     "ts-loader": "^6.2.1",
     "tsc-watch": "^4.2.9"
   },
@@ -122,4 +122,4 @@
     "url": "https://github.com/outline/rich-markdown-editor/issues"
   },
   "homepage": "https://github.com/outline/rich-markdown-editor#readme"
-}
+}

yarn.lock

@@ -11084,10 +11084,10 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
-typescript@3.9.7:
-  version "3.9.7"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.7.tgz#98d600a5ebdc38f40cb277522f12dc800e9e25fa"
-  integrity sha512-BLbiRkiBzAwsjut4x/dsibSTB6yWpwT5qWmC2OfuCg3GgVQCSgMs4vEctYPhsaGtd0AeuuHMkjZ2h2WG8MSzRw==
+typescript@4.1.6:
+  version "4.1.6"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.1.6.tgz#1becd85d77567c3c741172339e93ce2e69932138"
+  integrity sha512-pxnwLxeb/Z5SP80JDRzVjh58KsM6jZHRAOtTpS7sXLS4ogXNKC9ANxHHZqLLeVHZN35jCtI4JdmLLbLiC1kBow==
 
 uc.micro@^1.0.1, uc.micro@^1.0.5:
   version "1.0.6"