These unversioned files were modified upstream. The result of
$ openssl x509 -in <FILE> -text
for each old/new pair remains the same, however.
* gnu/packages/certs.scm (le-certs)[inputs]: Update hash for
isrgrootx1.pem, letsencryptauthorityx3.pem, and
letsencryptauthorityx4.pem.
505b2631a9