update renovate rules

[mayurkale22]

1. Schedule the update on every Friday morning
2. Assign to @dyladan, @mayurkale22 and @obecny by default (I am not sure about this).
3. Skip breaking updates like mocha, got, gcp-metadata, prom-client
4. Group together all non-major dependencies, see: https://docs.renovatebot.com/configuration-options/#groupname

[codecov]

Codecov Report

Merging #1246 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1246   +/-   ##
=======================================
  Coverage   93.29%   93.29%           
=======================================
  Files         126      126           
  Lines        3597     3597           
  Branches      724      724           
=======================================
  Hits         3356     3356           
  Misses        241      241           

[obecny]

Group together all non-major dependencies if this will work as I understand it means we should have much lower number of PR, this is gr8

[mayurkale22]

Group together all non-major dependencies if this will work as I understand it means we should have much lower number of PR, this is gr8

Yeah, that's right. Although it seems nice, there is a small chance of blocking whole PR due to one or more breaking updates. In this case, I believe we need to do some manual intervention. I would like to see how it goes and take it from there.

[dyladan]

I think some level of manual intervention is acceptable as long as it doesn't end up blocking every PR. Even if it does end up blocking some PRs, if the intervention isn't much work it might be worth it anyways to keep it down to one a couple PR per week.