add versions.yml to create-test-yml but not md5sum

[mirpedrol]

close #1958

The file versions.yml was removed from test.yml by mistake.
Add the check that the file exist back, but do not print the md5sum.

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

[maxulysse]

LGTM

[mirpedrol]

thanks!
omg this commit message, I can't type fast 🙈

[codecov]

Codecov Report

Merging #1963 (cbaecc2) into dev (5b8ed27) will increase coverage by 0.03%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##              dev    #1963      +/-   ##
==========================================
+ Coverage   61.10%   61.14%   +0.03%     
==========================================
  Files          37       37              
  Lines        4677     4676       -1     
==========================================
+ Hits         2858     2859       +1     
+ Misses       1819     1817       -2     

Impacted Files	Coverage Δ
nf_core/modules/test_yml_builder.py	49.77% <100.00%> (+0.22%)	⬆️
nf_core/modules/lint/__init__.py	83.06% <0.00%> (+0.52%)	⬆️

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