Update dependency gitdb to v4.0.8

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
gitdb	==4.0.7 -> ==4.0.8

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Release Notes

gitpython-developers/gitdb

v4.0.8

Compare Source

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Configuration

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[codecov]

Codecov Report

Merging #165 (99b3a37) into main (03e1377) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##              main      #165   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            2         2           
  Lines          156       156           
=========================================
  Hits           156       156           

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