RHOAIENG-38630: update RHEL base images and architectures for rstudio configurations

https://issues.redhat.com/browse/RHOAIENG-38630

Author: jiridanek

rstudio/rhel9-python-3.12/build-args/cpu.conf

@@ -1,3 +1,4 @@
-# Base Image   : CentOS Stream 9 with Python 3.12
-# Architectures: linux/arm64, linux/x86_64
-BASE_IMAGE=quay.io/opendatahub/odh-base-image-cpu-py312-c9s:latest
+# Base Image   : RHEL 9.6 with Python 3.12
+# Architectures: linux/arm64, linux/ppc64le, linux/x86_64, linux/s360x
+# Source       : https://quay.io/repository/aipcc/base-images/cpu
+BASE_IMAGE=quay.io/aipcc/base-images/cpu:3.1-1762903336

rstudio/rhel9-python-3.12/build-args/cuda.conf

@@ -1,4 +1,5 @@
-# Base Image   : CentOS Stream 9 with Python 3.12
+# Base Image   : RHEL 9.6 with Python 3.12
 # CUDA Version : 12.8.1
 # Architectures: linux/arm64, linux/x86_64
-BASE_IMAGE=quay.io/opendatahub/odh-base-image-cuda-py312-c9s:v12.8
+# Source       : https://quay.io/repository/aipcc/base-images/cuda
+BASE_IMAGE=quay.io/aipcc/base-images/cuda:3.1-1762903318