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

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

packages/techdocs-cli/package.json

@@ -40,7 +40,6 @@
     "@types/commander": "^2.12.2",
     "@types/fs-extra": "^9.0.6",
     "@types/http-proxy": "^1.17.4",
-    "@types/jest": "^26.0.7",
     "@types/node": "^16.11.26",
     "@types/serve-handler": "^6.1.0",
     "@types/webpack-env": "^1.15.3",