Bump typescript from 3.7.5 to 3.9.3

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 3.7.5 to 3.9.3.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](https://github.com/Microsoft/TypeScript/compare/v3.7.5...v3.9.3)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -34,7 +34,7 @@
         "redux-observable": "^1.2.0",
         "redux-saga": "^1.1.3",
         "redux-thunk": "^2.3.0",
-        "typescript": "~3.7.2",
+        "typescript": "~3.9.3",
         "xterm": "^4.5.0",
         "xterm-addon-fit": "^0.3.0"
     },

yarn.lock

@@ -10971,10 +10971,10 @@ typescript-tuple@^2.2.1:
   dependencies:
     typescript-compare "^0.0.2"
 
-typescript@~3.7.2:
-  version "3.7.5"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.7.5.tgz#0692e21f65fd4108b9330238aac11dd2e177a1ae"
-  integrity sha512-/P5lkRXkWHNAbcJIiHPfRoKqyd7bsyCma1hZNUGfn20qm64T6ZBlrzprymeu918H+mB/0rIg2gGK/BXkhhYgBw==
+typescript@~3.9.3:
+  version "3.9.3"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.3.tgz#d3ac8883a97c26139e42df5e93eeece33d610b8a"
+  integrity sha512-D/wqnB2xzNFIcoBG9FG8cXRDjiqSTbG2wd8DMZeQyJlP1vfTkIxH4GKveWaEBYySKIg+USu+E+EDIR47SqnaMQ==
 
 uncontrollable@^7.0.0:
   version "7.1.1"