Added root paths to MySQLHistoryFile, and PostgreSQLHistoryFile

[codecov[bot]]

Codecov Report

Merging #582 (0355ac6) into main (52b8f87) will not change coverage. Report is 2 commits behind head on main. The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #582   +/-   ##
=======================================
  Coverage   88.03%   88.03%           
=======================================
  Files           7        7           
  Lines         443      443           
=======================================
  Hits          390      390           
  Misses         53       53           

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[joachimmetz]

thanks for the changes