bug#52513: php build failure

[Leo Famulari]

On Thu, Dec 16, 2021 at 05:32:28PM +0000, Diego Nicola Barbato wrote:
> The test fails because two of the certificates it uses have expired on
> 11 December 2021.  Upstream has already fixed it [1] but the change has
> not made it into the 7.4.27 (!) release.  We could apply their fix with
> a patch or just disable the openssl_x509_checkpurpose test.

Oof. This is common failure of programs that use X.509 certificates in
test suites, and it's problematic for Guix because it makes our codebase
"expire".