[ci.jenkins.io container agents] AWS EKS Upgrade to Kubernetes 1.33.5

Artifact Caching Proxy ci agents in cluster cijenkinsioagents2 ci agents for bom in cluster cijenkinsioagents2

[Final Message] The upgrade went well, all tests are green.

[Initial Message] Thursday 4 December 2025, at 12:00 UTC, we’ll upgrade the EKS(AWS) cluster hosting ci.jenkins.io’s container agents and Artifact Caching proxy to Kubernetes 1.33.5

All agents using jnlp-linux-* or jnlp-bom labels, or pipelines with the buildPlugin() function with useContainer: true will be queued until the end of the operation.

More details on https://github.com/jenkins-infra/helpdesk/issues/4820#issuecomment-3607329009.