Migrate container image/Dockerfile from UBI8 to UBI9

[patchkez]

This PR should replace of using UBI8 images with UBI9.
I was able to build new image with:

podman build . -f ./src/main/docker/Dockerfile.jvm -t test_build_policies_ui_backend --ulimit=nofile=4096

I confirmed that curl exists in the final image as I had to remove it from dockerfile due to installation conflict:

podman run --rm -it --entrypoint=sh localhost/test_build_policies_ui_backend:latest
sh-5.1$ 
sh-5.1$ curl --version
curl 7.76.1 (x86_64-redhat-linux-gnu) libcurl/7.76.1 OpenSSL/3.0.7 zlib/1.2.11 nghttp2/1.43.0
Release-Date: 2021-04-14
Protocols: file ftp ftps http https 
Features: alt-svc AsynchDNS GSS-API HTTP2 HTTPS-proxy IPv6 Kerberos Largefile libz NTLM SPNEGO SSL UnixSockets

RHINENG-12536

[vkrizan]

@patchkez can you please also change the GitHub Action that does an image check? https://github.com/RedHatInsights/policies-ui-backend/blob/master/.github/workflows/checkupdate.yml#L23

[patchkez]

@patchkez can you please also change the GitHub Action that does an image check? https://github.com/RedHatInsights/policies-ui-backend/blob/master/.github/workflows/checkupdate.yml#L23

done

[vkrizan]

Thank you