ci(stepup-behat): also guard on missing haproxy CA cert

create_dev_ca.sh always produces haproxy.pem and haproxy.crt together, but
the regeneration check only looked at haproxy.pem. Check both so the CA
cert copy step right after can't run against a missing haproxy.crt.

Author: kayjoosten

.github/workflows/stepup-behat.yml

@@ -28,7 +28,7 @@ jobs:
           cd stepup
           cp .env.test .env
           cp gateway/surfnet_yubikey.yaml.dist gateway/surfnet_yubikey.yaml
-          if [ ! -f ../core/haproxy/haproxy.pem ]; then
+          if [ ! -f ../core/haproxy/haproxy.pem ] || [ ! -f ../core/haproxy/haproxy.crt ]; then
             ../core/scripts/create_dev_ca.sh
           fi
           # Distribute the dev CA to the app containers: the base image imports