Prepare for Flux v2.2.3

[stefanprodan]

Flux v2.2.3 is a patch release that comes with fixes to issues reported by users who upgraded to v2.2.

📅 Target dates: 1-5 Feb

Fixes:

• Oscillating reconciles for aggregated clusterroles kustomize-controller#1041
• Upgrading to 2.2.0, started getting "kustomize build failed: kustomization.yaml is empty" #4509
• Detect namespaced objects without a namespace specified pkg#716
• flux uninstall should error on unrecognised args #4551
• Improve kstatus output for failed early due to stalled resources pkg#715
• Panic while using bitbucketserver provider for git commit status notification-controller#700
• Remove stale Ready=False conditions value to show more accurate status helm-controller#884

CVE Patches:

• CVE-2023-45283 Go stdlib
• CVE-2023-39326 Go stdlib
• CVE-2023-49569 github.com/go-git/go-git
• CVE-2023-48795 golang.org/x/crypto
• GHSA-9763-4f94-gfch github.com/cloudflare/circl

Controller upgrades:

• Go 1.21.6
• Kubernetes 1.28.6 (k8s.io/api, k8s.io/apimachinery, k8s.io/client-go, etc)
• Automate the GitOps Toolkit packages updates with dependabot #4562

Release checklist:

• source-controller v1.2.4
• kustomize-controller v1.2.2
• notification-controller v1.2.4
• helm-controller v0.37.4
• image-reflector-controller v0.31.2
• image-automation-controller 0.37.1
• flux2 v2.2.3
• terraform-provider-flux v1.2.3