Sync headers abuse

[ewels]

Hopefully fixes #911 !

PR checklist

• This comment contains a description of changes (with reason)
• CHANGELOG.md is updated
• If you've fixed a bug or added code that should be tested, add tests!
• Documentation in docs is updated

[KevinMenden]

Alright, let's hope that does the trick

[codecov]

Codecov Report

Merging #949 (fa00cde) into dev (17fbcf8) will decrease coverage by 0.03%.
The diff coverage is 66.66%.

@@            Coverage Diff             @@
##              dev     #949      +/-   ##
==========================================
- Coverage   69.59%   69.56%   -0.04%     
==========================================
  Files          34       34              
  Lines        4187     4196       +9     
==========================================
+ Hits         2914     2919       +5     
- Misses       1273     1277       +4     

Impacted Files	Coverage Δ
nf_core/sync.py	51.98% <66.66%> (+0.14%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 17fbcf8...fa00cde. Read the comment docs.