## Summary
- Upgrades all GitHub Actions workflows to use `actions/checkout@v5`
- Updates 33 instances across 17 workflow files
- Ensures we're using the latest version with security patches and
improvements
## Changes
Updated the following workflow files from `actions/checkout@v4` to
`actions/checkout@v5`:
- `.github/workflows/backport.yaml`
- `.github/workflows/chromatic.yaml`
- `.github/workflows/claude-pr-review.yml`
- `.github/workflows/create-release-candidate-branch.yaml`
- `.github/workflows/dev-release.yaml`
- `.github/workflows/devtools-python.yaml`
- `.github/workflows/i18n-custom-nodes.yaml`
- `.github/workflows/json-validate.yaml`
- `.github/workflows/lint-and-format.yaml`
- `.github/workflows/pr-playwright-deploy.yaml`
- `.github/workflows/pr-storybook-deploy.yaml`
- `.github/workflows/test-ui.yaml`
- `.github/workflows/update-electron-types.yaml`
- `.github/workflows/update-manager-types.yaml`
- `.github/workflows/update-registry-types.yaml`
- `.github/workflows/version-bump.yaml`
- `.github/workflows/vitest.yaml`
Note: `.github/workflows/publish-frontend-types.yaml` and
`.github/workflows/release.yaml` were already using v5.
## Test plan
- [ ] CI workflows should continue to run successfully
- [ ] No functional changes - this is a dependency version upgrade only
🤖 Generated with [Claude Code](https://claude.ai/code)
┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-5859-ci-Upgrade-actions-checkout-from-v4-to-v5-27e6d73d3650815488adee20c74c0464)
by [Unito](https://www.unito.io)
Co-authored-by: Claude <noreply@anthropic.com>
## Summary
Added GitHub Actions workflow and shell script to validate JSON syntax
in repository files, as in the past we have committed locales files with
invalid JSON.
## Changes
- **What**: Added CI workflow for JSON validation with `jq` syntax
checking
- **Dependencies**: CI workflow requires `jq` (pre-installed on
ubuntu-latest runners)
## Review Focus
Script exclusion patterns for TSConfig files and environment variable
override mechanism (`JSON_LINT_EXCLUDES`).
┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-5837-ci-add-JSON-validation-CI-workflow-27c6d73d365081a199b1d9ae9e4edfa4)
by [Unito](https://www.unito.io)
