Demo nginx version upgrade

[swatiganesh]

🔩 Description: What code changed, and why?

Updated nginx-version to v1.25.4

⛓️ Related Resources

https://chefio.atlassian.net/browse/CHEF-5728

👍 Definition of Done

Updated nginx-version to v1.25.4

👟 How to Build and Test the Change

rebuild components/automate-es-gateway
rebuild components/automate-load-balancer

✅ Checklist

All PRs must tick these:

• I have read the CONTRIBUTING document.
• All commits signed-off for the Developer Certification of Origin.

With occasional exceptions, all PRs from Progress employees must tick these:

• Is the code clear? (complicated code or lots of comments--subdivide and use well-named methods, meaningful variable names, etc.)
• Consistency checked? (user notifications, user prompts, visual patterns, code patterns, variable names)
• Repeated code blocks eliminated? (adapt and reuse existing components, blocks, functions, etc.)
• Spelling, grammar, typos checked? (at a minimum use make spell in any component directory)
• Code well-formatted? (indents, line breaks, etc. improve rather than hinder readability)

All PRs from Progress employees should tick these if appropriate:

• Tests added/updated? (all new code needs new tests)
• Docs added/updated? (all customer-facing changes)

Please add a note next to any checkbox above if you are NOT ticking it.

📷 Screenshots, if applicable

[netlify]

👷 Deploy Preview for chef-automate processing.

Name	Link
🔨 Latest commit	c1fd01f
🔍 Latest deploy log	https://app.netlify.com/sites/chef-automate/deploys/661e23815b980000085e0a26