chore(s3-request-presigner): depend on ts 3.4

make it consistent with other packages

Author: AllanZhengYP

packages/s3-request-presigner/package.json

@@ -25,7 +25,7 @@
     "@types/jest": "^24.0.12",
     "@types/node": "^12.0.2",
     "@aws-sdk/client-s3-node": "0.1.0-preview.1",
-    "typescript": "^3.0.0",
+    "typescript": "~3.4.0",
     "jest": "^24.7.1"
   }
 }