remove @types/jszip

jszip ships with type definitions so a separate package is not needed

package.json

@@ -9,7 +9,6 @@
         "@testing-library/user-event": "^10.3.4",
         "@types/file-saver": "^2.0.1",
         "@types/jest": "^25.2.3",
-        "@types/jszip": "^3.1.7",
         "@types/node": "^12.0.0",
         "@types/react": "^16.9.35",
         "@types/react-dom": "^16.9.8",

yarn.lock

@@ -1563,13 +1563,6 @@
   resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.4.tgz#38fd73ddfd9b55abb1e1b2ed578cb55bd7b7d339"
   integrity sha512-8+KAKzEvSUdeo+kmqnKrqgeE+LcA0tjYWFY7RPProVYwnqDjukzO+3b6dLD56rYX5TdWejnEOLJYOIeh4CXKuA==
 
-"@types/jszip@^3.1.7":
-  version "3.1.7"
-  resolved "https://registry.yarnpkg.com/@types/jszip/-/jszip-3.1.7.tgz#c45bd72b448b3fb002125282c57c36190247cb34"
-  integrity sha512-+XQKNI5zpxutK05hO67huUTw/2imXCuJWjnFdU63tRES/xXSX1yVR9cv/QAdO6Rii2y2tTHbzjQ4i2apLfuK0Q==
-  dependencies:
-    "@types/node" "*"
-
 "@types/minimatch@*":
   version "3.0.3"
   resolved "https://registry.yarnpkg.com/@types/minimatch/-/minimatch-3.0.3.tgz#3dca0e3f33b200fc7d1139c0cd96c1268cadfd9d"