src/meta-openembedded:python3-google-auth: Disable TestDecryptPrivateKey ptest

We have upgraded py3-openssl module to 24.3.0 in core, which
means this test now fails as py3-openssl has removed the APIs it uses [1]
disable until it is fixed in google-auth module

Fixes
ERROR: 'OpenSSL.crypto' has no attribute 'sign'

[1] googleapis/google-api-python-client#2554

Signed-off-by: Khem Raj <raj.khemgmail.com>

Author: kraj