Move towards UBI base images for feast related containers #4920

Is your feature request related to a problem? Please describe.
There are several benefits of moving towards a UBI base image, for example -

• Red Hat releases new UBI images when a new version of RHEL is released and when critical Common Vulnerabilities and Exposures (CVEs) are patched, mirroring the RHEL update policy. The full image policy can be found here: Red Hat Container Image Updates.
• Additionally, language runtimes like python are configured to produce the smallest image possible.

Describe the solution you'd like

• For the python feature-server image, use the following:
  registry.access.redhat.com/ubi9/python-311:9.5
  https://catalog.redhat.com/software/containers/ubi9/python-311/63f764b03f0b02a2e2d63fff

• For the feast go operator, use the following:
  registry.access.redhat.com/ubi9/go-toolset:1.21
  https://catalog.redhat.com/software/containers/ubi9/go-toolset/61e5c00b4ec9945c18787690
  registry.access.redhat.com/ubi9-micro:9.5
  https://catalog.redhat.com/software/containers/ubi9-micro/61832b36dd607bfc82e66399

Additional context
Blog on UBI with additional info / links -
https://www.redhat.com/en/blog/introducing-red-hat-universal-base-image