Prepare for Flux v2.5.0

[stefanprodan]

Flux 2.5.0 comes with new features, bug fixes and performance improvements.

📅 Target dates: 17-27 February

🚀 Roadmap milestone: https://fluxcd.io/roadmap/#v25-q1-2025

Highlights

• Support for GitHub App authentication (GitRepository, ImageUpdateAutomation)
• Custom Health Checks using CEL (Kustomization)
• Fine-grained control of garbage collection (Kustomization)
• Enable decryption of secrets generated by Kustomize components (Kustomization)
• Support for custom event metadata from annotations (Alert)
• Git commit status updates for Kustomizations with OCIRepository sources (Alert)
• Resource filtering using CEL for webhook receivers (Receiver)
• Debug commands for Flux Kustomizations and HelmReleases

Dependencies updates

• Kubernetes 1.32
• Go 1.23
• Kustomize 5.6
• Helm 3.17
• SOPS 3.9
• Cosign 2.4
• Notation 1.3

Release checklist

• source-controller v1.5.0
• kustomize-controller v1.5.0
• notification-controller v1.5.0
• helm-controller: v1.2.0
• image-reflector-controller v0.34.0
• image-automation-controller v0.40.0
• flux-benchmark v2.5.0
• flux2 v2.5.0
• terraform-provider-flux v1.5.0

Conformance testing

Distribution	Versions
Kubernetes KinD	1.30.9, 1.31.5, 1.32.1
OpenShift	4.16.0-okd, 4.17.0-okd
K3s	1.30.9, 1.31.5, 1.32.1
AWS	EKS 1.32.0
Google Cloud	1.31.4-gke.1372000

Documentation

• Update API docs
• Publish Flux release change log to GitHub & Slack
• Publish v2.5 website