Truncate long branch names created by Dependabot, causing build failure

[bkoelman]

Fixes #1784.

QUALITY CHECKLIST

• Changes implemented in code
• Complies with our contributing guidelines
• N/A: Adapted tests
• N/A: Documentation updated

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.05%. Comparing base (edf33a3) to head (173b31a).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1788   +/-   ##
=======================================
  Coverage   92.05%   92.05%           
=======================================
  Files         473      473           
  Lines       14818    14818           
  Branches     2361     2361           
=======================================
  Hits        13640    13640           
  Misses        770      770           
  Partials      408      408           

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