switch @types/jest to only be depended on by @backstage/cli

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

plugins/rollbar/package.json

@@ -59,7 +59,6 @@
     "@testing-library/react": "^12.1.3",
     "@testing-library/react-hooks": "^8.0.0",
     "@testing-library/user-event": "^14.0.0",
-    "@types/jest": "^26.0.7",
     "@types/node": "^16.11.26",
     "@types/react": "^16.13.1 || ^17.0.0",
     "cross-fetch": "^3.1.5",