Prepare 0.31.0 release

[tkatila]

Checklist:

• run validation on main
  • GNR (IAA, DSA)
  • GNR-D (QAT)
  • FPGA
  • SPR (SGX, QAT, GPU, IAA, DSA)
• Make sure kube-rbac-proxy is the latest version
• create release-0.31 branch
• release branch changes
  • edit default_labels.docker + make dockerfiles
  • make set-version TAG=0.31.0 + commit
  • update publish.yml to create docs for v0.31
• draft release notes, review
• publish release
• main branch changes: Post 0.31 updates #1859
  • update base README for supported versions and docs URL
  • update main branch's operator CRs to point to 0.31, also reconciler.go
• update helm chart: Device plugins 0.31 helm-charts#61
  • Make sure to update CRDs and README
• update operatorhub.io bundle

[mythi]

• update operatorhub.io bundle

we're now back to #1731 (comment)

[tkatila]

I added a section about the operatorhub bundle to the release notes.

[tkatila]

I added a section about the operatorhub bundle to the release notes.

Nevermind. I'll remove it.

[hj-johannes-lee]

k8s-operatorhub/community-operators#5088
k8s-operatorhub/community-operators#5091
Done!

[mythi]

k8s-operatorhub/community-operators#5088 k8s-operatorhub/community-operators#5091 Done!

since this moved to stable channel, did you check the upgrade/promotion flows are done correctly?

[hj-johannes-lee]

#1865
I found out that actually the upgrade has not been working properly since sha256 was introduced.