4.X Add Maven clean install step to CI workflow

[melloware]

Added a new Maven build step for clean install.

[melloware]

@volosied this confirms your finding

Failed to execute goal io.quarkus:quarkus-maven-plugin:3.2.9.Final:build (default) on project quarkus-myfaces-showcase: 
[ERROR] The plugin io.quarkus:quarkus-maven-plugin:3.2.9.Final has unmet prerequisites: 
[ERROR] 	Required Java version 17 is not met by current version: 11.0.32
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.