Use copier manager

[huxuan]

Ref: serious-scaffold/ss-pybind11#31

copierConstraint

[msclock]

I try to set constraint for copier with the below snippet but renovate schema can't recognize it.

{
  "constraint": {
    "copier": "4.9.1" // or "==4.9.1"
  }
}

[huxuan]

I try to set constraint for copier with the below snippet but renovate schema can't recognize it.

{
  "constraint": {
    "copier": "4.9.1" // or "==4.9.1"
  }
}

I got the same problem. :-(