update submodule in CI run

[gesinn-it-evl]

This PR is made in reference to: #

This PR addresses or contains:

• CI: always updates the submodule regardless of the fixed commit hash

This PR includes:

• Tests (unit/integration)
• CI build passed

Fixes #

[codecov-commenter]

Codecov Report

Merging #63 (2eff596) into master (c060750) will not change coverage.
Report is 2 commits behind head on master.
The diff coverage is n/a.

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@@            Coverage Diff            @@
##             master      #63   +/-   ##
=========================================
  Coverage     26.92%   26.92%           
  Complexity       48       48           
=========================================
  Files             3        3           
  Lines           130      130           
=========================================
  Hits             35       35           
  Misses           95       95           

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