[github] Add Renovate configuration

[townsend2010]

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (7f2fe56) 88.55% compared to head (069f1dc) 88.56%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3408   +/-   ##
=======================================
  Coverage   88.55%   88.56%           
=======================================
  Files         251      251           
  Lines       13866    13866           
=======================================
+ Hits        12279    12280    +1     
+ Misses       1587     1586    -1     

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[georgeliao]

@townsend2010 it looks good to me, I think the recommended configure is good for now.