+ update K8s patch version to v1.28.5
+ update percona-toolkit patch version to v3.5.5
+ switch to secure https postgres repository
A bunch of redundant third-party packages are installed inside the images, many with
security vulnerabilities. Implementing best practices should solve both problems.
Change-Id: I2105fe0b6058b64ae49d2977da5f1e8bad976991
3824cae821