fix(core): Fix all dependency versions for backend packages (no-changelog) (#7745)

Once the packages are published to NPM, they don't have the
`pnpm-lock.yaml` to fix dependency versions. Which means that any
dependency with `^` gets auto-upgrade to the latest matching minor,
which can cause issues like
[this](https://github.com/node-cache-manager/node-cache-manager/issues/611).

packages/@n8n/client-oauth2/package.json

@@ -20,6 +20,6 @@
     "dist/**/*"
   ],
   "dependencies": {
-    "axios": "^0.21.1"
+    "axios": "0.21.4"
   }
 }