guix: ignore additional failing certvalidator test
guix: ignore additional failing certvalidator test

Similar to 85885919656a3f606f3d7f208378aabe95f3f62d.

```bash
ERROR: test_revocation_mode_soft (tests.test_validate.ValidateTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/tmp/guix-build-python-certvalidator-0.1-1.a145bf2.drv-0/source/tests/test_validate.py", line 85, in test_revocation_mode_soft
    validate_path(context, path)
  File "/tmp/guix-build-python-certvalidator-0.1-1.a145bf2.drv-0/source/tests/../certvalidator/validate.py", line 50, in validate_path
    return _validate_path(validation_context, path)
  File "/tmp/guix-build-python-certvalidator-0.1-1.a145bf2.drv-0/source/tests/../certvalidator/validate.py", line 358, in _validate_path
    raise PathValidationError(pretty_message(
certvalidator.errors.PathValidationError: The path could not be validated because the end-entity certificate expired 2022-07-27 12:00:00Z
```

jambolo/bitcoin,jambolo/bitcoin,AkioNak/bitcoin,Xekyo/bitcoin,fanquake/bitcoin,kallewoof/bitcoin,namecoin/namecoin-core,bitcoinsSG/bitcoin,namecoin/namecore,Xekyo/bitcoin,AkioNak/bitcoin,namecoin/namecoin-core,particl/particl-core,Xekyo/bitcoin,namecoin/namecore,sstone/bitcoin,kallewoof/bitcoin,kallewoof/bitcoin,Xekyo/bitcoin,lateminer/bitcoin,bitcoinsSG/bitcoin,jambolo/bitcoin,kallewoof/bitcoin,lateminer/bitcoin,fanquake/bitcoin,bitcoinsSG/bitcoin,kallewoof/bitcoin,bitcoin/bitcoin,namecoin/namecore,jambolo/bitcoin,particl/particl-core,ajtowns/bitcoin,bitcoin/bitcoin,mruddy/bitcoin,AkioNak/bitcoin,mruddy/bitcoin,sstone/bitcoin,tecnovert/particl-core,jambolo/bitcoin,jamesob/bitcoin,tecnovert/particl-core,fujicoin/fujicoin,tecnovert/particl-core,fujicoin/fujicoin,ajtowns/bitcoin,AkioNak/bitcoin,namecoin/namecoin-core,lateminer/bitcoin,lateminer/bitcoin,bitcoinsSG/bitcoin,jambolo/bitcoin,ajtowns/bitcoin,fanquake/bitcoin,tecnovert/particl-core,fanquake/bitcoin,jamesob/bitcoin,kallewoof/bitcoin,bitcoin/bitcoin,namecoin/namecoin-core,sipsorcery/bitcoin,lateminer/bitcoin,sipsorcery/bitcoin,fujicoin/fujicoin,fanquake/bitcoin,ajtowns/bitcoin,tecnovert/particl-core,AkioNak/bitcoin,sstone/bitcoin,sipsorcery/bitcoin,jamesob/bitcoin,jamesob/bitcoin,fujicoin/fujicoin,tecnovert/particl-core,namecoin/namecoin-core,ajtowns/bitcoin,namecoin/namecore,particl/particl-core,mruddy/bitcoin,namecoin/namecore,jamesob/bitcoin,mruddy/bitcoin,sipsorcery/bitcoin,particl/particl-core,sipsorcery/bitcoin,mruddy/bitcoin,particl/particl-core,Xekyo/bitcoin,namecoin/namecoin-core,AkioNak/bitcoin,bitcoinsSG/bitcoin,fanquake/bitcoin,lateminer/bitcoin,sstone/bitcoin,bitcoinsSG/bitcoin,sstone/bitcoin,bitcoin/bitcoin,bitcoin/bitcoin,sipsorcery/bitcoin,sstone/bitcoin,jamesob/bitcoin,fujicoin/fujicoin,bitcoin/bitcoin,namecoin/namecore,Xekyo/bitcoin,fujicoin/fujicoin,mruddy/bitcoin,particl/particl-core,ajtowns/bitcoin