Update dependency ch.qos.logback:logback-classic to v1.2.6

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
ch.qos.logback:logback-classic (source)	1.2.5 -> 1.2.6

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[codecov]

Codecov Report

Merging #1581 (0a44c59) into master (363047d) will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1581      +/-   ##
==========================================
+ Coverage   85.12%   85.14%   +0.01%     
==========================================
  Files         282      282              
  Lines        5922     5922              
  Branches      444      444              
==========================================
+ Hits         5041     5042       +1     
  Misses        728      728              
+ Partials      153      152       -1