ci: fix signing cedarling whls #321

Job	Run time
docker (auth-server)	39s
docker (certmanager)	38s
docker (config-api)	1m 21s
docker (configurator)	37s
docker (fido2)	1m 31s
docker (persistence-loader)	1m 2s
docker (scim)	58s
docker (monolith)	38s
docker (loadtesting-jmeter)	58s
docker (link)	56s
docker (casa)	47s
docker (all-in-one)	7m 41s
docker (saml)	37s
docker (keycloak-link)	41s
docker (kc-scheduler)	50s
docker (cedarling-flask-sidecar)	52s
	20m 46s

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