docs: add release checklist to contribution guide (#3042)

Co-authored-by: odubajDT <[email protected]>

docs/docs/contribute/general/release-checklist.md

@@ -0,0 +1,30 @@
+# Release Checklist
+
+This page should be used to document the current process to create a full release for Keptn.
+
+## Checklist
+
+1. (in-between every release: resolve conflicts in release-please-manifest file)
+1. run security scans
+1. release python runtime
+1. update helm tests and helm chart docs with new python runtime version in renovate PR
+1. merge python runtime renovate PRs
+1. release deno runtime
+1. update helm tests and helm chart docs with new deno runtime version in renovate PR
+1. merge deno runtime renovate PRs
+1. re-generate cert-manager Helm chart docs bump cert-manager chart version in main chart
+1. release cert-manager by merging pr in charts
+1. manually updates the cert manager library inside metrics and lifecycle operator with current commit hash from master
+1. re-generate metrics-operator Helm chart docs
+1. release metrics operator bump metrics operator chart version in main chart
+1. release metrics-operator helm chart
+1. release scheduler
+1. fix scheduler pr conflicts re-generate lifecycle-operator Helm chart docs
+1. release lifecycle operator bump lifecycle-operator chart version in main chart
+1. release lifecycle-operator helm chart
+1. helm dep update to fix Chart.lock files
+1. klt release bump umbrella chart version in main chart
+1. release the Keptn chart
+1. update `stable` tag to the new keptn version and rebuild stable tag on readthedocs
+1. verify docs
+1. manually test examples

mkdocs.yml

@@ -191,6 +191,7 @@ nav:
               - PR review process: docs/contribute/general/git/review.md
           - Contribution Guidelines: docs/contribute/general/contrib-guidelines-gen.md
           - Refinement Process: docs/contribute/general/refinement-guide.md
+          - Release Checklist: docs/contribute/general/release-checklist.md
       - Software contributions:
           - docs/contribute/software/index.md
           - Software development environment: docs/contribute/software/dev-environ.md