This updates the `renovate.json` to remove a version pinning of `lint-staged` which clearly didn't work since the current version of `lint-staged` is newer than `v7`.
Renovate v12 introduces a default of `pinVersions=false` and removes the hardcoded `peerDependencies.pinVersions=false` setting. This repository's root level `pinVersions=true` therefore then trickles down to `peerDependencies` as well. This PR updates Renovate config to use a preset that pins everything except `peerDependencies`.
As determined in
https://github.com/renovateapp/config-help/issues/23#issuecomment-377202632,
it seems that it's not possible to have this sort of inherited
configuration. It's possible that when I first introduced this behavior
that this behavior was on its way out (and the breaking change in Renovate
v11 on its way in).
Luckily, Renovate's shared configuration option still allows this to be
relatively painless and our `apollo-docs` shared configuration[0] does most
of the heavy lifting here so there won't be too much Renovate toe-stepping.
If this works well in the `apollo-server` repository, I'll transplant this
change to the other docs repositories[1].
[0] https://github.com/apollographql/renovate-config-apollo-docs
[1] https://github.com/meteor/hexo-theme-meteor
