Renovate config to automate @edx namespaced minor/patch version upgrades

[abdullahwaheed]

Ticket

Create common renovate config that automates @edx namespaced minor/patch version upgrades

What has changed

Added Renovate config to update and auto merge @edx name spaced minor and patch packages.
As no schedule is provided, it will create and merge renovate PRs at any time

[codecov]

Codecov Report

Base: 39.24% // Head: 39.24% // No change to project coverage 👍

Coverage data is based on head (495c634) compared to base (ab215cd).
Patch has no changes to coverable lines.

❗ Current head 495c634 differs from pull request most recent head 96147b0. Consider uploading reports for the commit 96147b0 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #629   +/-   ##
=======================================
  Coverage   39.24%   39.24%           
=======================================
  Files         109      109           
  Lines        2227     2227           
  Branches      597      597           
=======================================
  Hits          874      874           
  Misses       1268     1268           
  Partials       85       85           

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