Group dependabot updates

[nyurik]

Ensure dependabot creates updates in batches

Fixes #1020

[HarelM]

Are the batches related to a npm scope? How are these grouped?
In general, besides the fact that CI is currently unstable, the dependabot PRs are merged automatically and the fact that they are not grouped allows to know which package broke the build, so it's not a bad thing...

[nyurik]

the batch is always per updater, i.e. NPM has one group, whereas if this project had Java, that would be a separate group. The groups are created daily. You do have a good point about breakage detection, but it is only useful if they break all the time. Usually, most batches will pass. In the rare case when they do not, we can fairly easily tell which component broke, and update them by hand. Overall, I think the net-gain will be significantly higher because it will lessen the mental load and flood of PRs

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 64.80%. Comparing base (af01346) to head (28f1922).
Report is 70 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1079      +/-   ##
==========================================
+ Coverage   59.84%   64.80%   +4.95%     
==========================================
  Files         104      104              
  Lines        3011     5825    +2814     
  Branches      680     1724    +1044     
==========================================
+ Hits         1802     3775    +1973     
- Misses       1209     2048     +839     
- Partials        0        2       +2     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[birkskyum]

With the open-pull-requests-limit: 20 removed, what's the default value it fall back on?

[nyurik]

i am begining to question this PR myself tbh... having come from the Rust background, when dependencies are updated daily and there is a very high expected stability, in js it seems everything is far more.... unpredictable... so perhaps it is too soon to add this... I will just have to filter my mailbox from all the junk