`pam_opa` build is failing in GH Actions

[charlesdaniels]

The pam_opa image does not build due to this error:

--2022-04-04 21:18:15--  https://www.digip.org/jansson/releases/jansson-2.11.tar.gz
Resolving www.digip.org (www.digip.org)... 91.232.155.81, 2001:67c:1be8:1337::443
Connecting to www.digip.org (www.digip.org)|91.232.155.81|:443... connected.
ERROR: The certificate of 'www.digip.org' is not trusted.
ERROR: The certificate of 'www.digip.org' has expired.
Removing intermediate container 604d4960237d
The command '/bin/sh -c wget https://www.digip.org/jansson/releases/jansson-2.11.tar.gz &&     tar -xvf jansson-2.11.tar.gz &&     cd jansson-2.11 &&     ./configure --prefix=/usr &&     make &&     make check &&     make install' returned a non-zero code: 5
make[1]: *** [Makefile:12: image] Error 5
make: *** [Makefile:7: build] Error 2

However, I am able to run wget https://www.digip.org/jansson/releases/jansson-2.11.tar.gz without issue on my M1 Mac (macOS Monterey 12.1, build 21C52). Presumably, the GH Actions runner either has a clock or a certificate store issue that is preventing this from working.

One possible fix is to use --no-check-certificate and then check the sha265 sum of the downloaded file against a known value.

See also: #168