backstage release v0.121.0

Added

• Add custom review step for scaffolder templates.
• Add multi-source value editing for app deployment scaffolder templates.
• Add isValidDNSSubdomainName utility for validating Kubernetes resource names.
• Add passwordManagerIgnoreProps utility and height/maxHeight options to YamlEditor.
• Add fromJson Nunjucks template filter for deserializing JSON strings in scaffolder templates.

Changed

• Discover app deployment templates by label instead of hardcoded name.
• Disable Edit Deployment button when deployment structure is incompatible with the edit template.
• Warn when an app deployment is managed through GitOps.

Fixed

• Fix version truncation not working on deployment details page.
• Fix YAML block-style autocompletion in CodeMirror editors. See ./docs/releases/v0.121.0-changelog.md for more information.