feature: add Youtube available Devops courses in free-courses-en.md

[HRIDYANSHU054]

What does this PR do?

Add resource(s)

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For resources

Description

Adding two free, full-length DevOps video courses/tutorials available on YouTube to the appropriate list section. These cover foundational and practical end-to-end deployment workflows.

1. Build and Deploy a Production-Ready API | Full DevOps Course 2025
2. DevOps Tutorial for Beginners | Learn DevOps in 7 Hours - Full Course | DevOps Training | Edureka

Why is this valuable (or not)?

These are valuable free resources because they provide:

• Comprehensive Overviews: The Edureka course offers a broad, 7-hour introduction to the core concepts, tools, and practices of DevOps.
• Practical Workflows: The JavaScript Mastery course focuses on a real-world, end-to-end project, showing users how to build and deploy a production-ready API.

How do we know it's really free?

Both resources are freely available YouTube videos from established channels.

For book lists, is it a book? For course lists, is it a course? etc.

These are free online video tutorials available on YouTube.

Checklist:

• Search for duplicates.
• Include author(s) and platform where appropriate.
• Put lists in alphabetical order, correct spacing.
• Add needed indications (PDF, access notes, under construction).
• Used an informative name for this pull request.

Follow-up

• Check the status of GitHub Actions and resolve any reported warnings!