If you can identify the point in the code where this is happening, you can selectively turn off this specific warning type with:
no warnings 'misc';
# problem code here
use warnings 'misc';
Be aware this turns off all 'misc' warnings between no warnings 'misc'; and use warnings 'misc';.
If you look in perldiag, you can do a search for 'Version string' which finds:
Version string '%s' contains invalid data; ignoring: '%s'
(W misc) The version string contains invalid characters at the end, which are being ignored.
The "(W misc)" tells you which warning to turn off.
perllexwarn describes all the warning types.
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