we are currently trying to upgrade from Quarkus 3.10.0 to 3.12.0

after installing the latest quarkus-cli (3.12.0) and running

quarkus update

we are getting the following errors (using a corporate Nexus repo)

[WARNING] Failed to resolve the Quarkus extension registry descriptor of registry.quarkus.io from shp.mirror (https://[OUR_NEXUS_REPO].com/repository/SHP-Public/) having applied the mirrors and/or proxies from the Maven settings to registry.quarkus.io (https://registry.quarkus.io/maven). Re-trying with the original registry.quarkus.io repository configuration.

then

[ERROR] Failed to execute goal io.quarkus:quarkus-maven-plugin:3.12.0:update (default-cli) on project [OUR_PROJECT]: Failed to initialize Quarkus extension resolver: Failed to resolve the Quarkus extension registry descriptor of registry.quarkus.io from registry.quarkus.io (https://registry.quarkus.io/maven) -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal io.quarkus:quarkus-maven-plugin:3.12.0:update (default-cli) on project [OUR_PROJECT]: Failed to initialize Quarkus extension resolver

my understanding in this area is rather patchy, so please bear with me.

Using
mvn io.quarkus.platform:quarkus-maven-plugin:3.12.0:update -N

I get more or less the same error

Does this indicate some configuration issue on our Nexus server side so that it can connect to registry.quarkus.io? Or is there something that I need to update in my local Maven settings?

Thanks