Fix test skip mechanism and update leeway to v0.10.8

[geropl]

Description

This PR includes multiple fixes and updates:

1. Fix test skip mechanism - Handle empty environment variables
2. Update leeway - Upgrade from v0.10.6 to v0.10.8
3. Enable immediate cache upload - Set LEEWAY_CACHE_UPLOAD_IMMEDIATE=true
4. Fix installer dependency - Update outdated helm registry reference

Changes

Test Skip Mechanism Fix

The ifEnvVarNotSet utility was failing in CI because it only checked for undefined, but CI environments can set variables to empty strings. This caused tests to run without valid tokens, resulting in 401 errors.

Solution: Updated to check for both undefined and empty strings:

const value = process.env[name];
const skip = value === undefined || value === '';

Leeway Updates

• Updated LEEWAY_VERSION from 0.10.6 → 0.10.7 → 0.10.8
• Added LEEWAY_CACHE_UPLOAD_IMMEDIATE=true to enable new upload mechanism
• Updated dev-environment image references throughout CI workflows

Installer Fix

• Fixed dependency to outdated helm registry in docker-registry chart

Commits

• Fix test skip mechanism to handle empty env vars
• [content-service] Fix outdated test expectations
• [dev] Drop "--ignore-scripts" for yarn
• [dev] Update leeway to v0.10.7
• [dev] Update leeway to v0.10.8
• [dev] Update dev-environment images throughout CI
• [installer] Fix dependency to outdated helm registry

Testing

• Verified test skip logic handles all cases correctly
• CI builds new dev-environment images with updated leeway versions
• All workflow files updated to use latest dev-environment image

[github-actions]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[github-actions]

⚠️ Hey reviewer! BE CAREFUL ⚠️
Review the code before opening in your Gitpod. .gitpod.yml was changed and it might be harmful.

[github-actions]

⚠️ Hey reviewer! BE CAREFUL ⚠️
Review the code before opening in your Gitpod. .gitpod.yml was changed and it might be harmful.