Looks like Red Hat "forgot" to migrate the OpenJDK 17 packages into the UBI package repository.
# docker run -it --rm registry.access.redhat.com/ubi8-minimal:8.5 microdnf -y --refresh install java-17-openjdk-headless
(microdnf:1): librhsm-WARNING **: 08:44:52.262: Found 0 entitlement certificates
(microdnf:1): librhsm-WARNING **: 08:44:52.263: Found 0 entitlement certificates
Downloading metadata...
Downloading metadata...
Downloading metadata...
error: No package matches 'java-17-openjdk-headless'
# docker run -it --rm registry.access.redhat.com/ubi8-minimal:8.6 microdnf -y --refresh install java-17-openjdk-headless
(microdnf:1): librhsm-WARNING **: 08:45:26.801: Found 0 entitlement certificates
(microdnf:1): librhsm-WARNING **: 08:45:26.802: Found 0 entitlement certificates
Downloading metadata...
Downloading metadata...
Downloading metadata...
error: No package matches 'java-17-openjdk-headless'
