[#30][#32] Update Distro to the latest drupal 10.2.6, update base image versions

Check list to complete before assigning a MR to someone:

• Link related issues on Related Issues;
• Update documentation;
• Comment relevant changes, why/what lead us to make this change;
• Review at least once you own MR;
• Tests green;

Related issues:

• #30 (closed)
• #32 (closed)

Post-deployment:

• Update Easy-Start Image (example https://gitlab.cern.ch/paas-tools/okd4-install/-/merge_requests/1421) and document process under https://okd-internal.docs.cern.ch/cluster-flavours/drupal/design/easystart/