Add 20k RN threshold to build

[radoslawrolka]

📝 Description

Avoid building for versions with fewer than 20k downloads in the past week. These are typically new releases that may be quickly replaced by a patch fix - until 20 downloads any major issue that would require fixing and new patch release should probably be discovered.

{
  "package": "react-native",
  "downloads": {
    ...
    "0.80.0": 46674,
    "0.80.1": 42944,
    "0.80.2": 44888,
    "0.80.3": 20549,
    "0.81.0": 58051,
    "0.81.1": 17329,
    "0.81.2": 281,
    "0.81.3": 883,
    "0.81.4": 197429,
    "0.81.5": 1357552,
    "0.81.6": 51756,
    "0.82.0": 19400,
    "0.82.1": 94887,
    "0.83.0": 65227,
    "0.83.1": 219394,
    "0.83.2": 417736,
    "0.83.3": 715,
    "0.83.4": 10672,
    "0.84.0": 111508,
    "0.84.1": 515617,
  }
}

🎯 Type of Change

• ⚡ Performance improvement