fix: remove .git from exclude_assets in deploy-pages workflow

[Copilot]

Blog Post Submission

Summary

The deploy job was failing with fatal: not a git repository because .git was listed in exclude_assets. The peaceiris/actions-gh-pages action already strips the workspace .git before copying; listing it in exclude_assets caused the action to also delete the cloned gh-pages branch's .git from the temp deployment dir, destroying the repo it needs to commit and push.

Fix: Remove .git from exclude_assets:

# Before
exclude_assets: '.github,.git,template_repository'

# After
exclude_assets: '.github,template_repository'

Checklist

• I added my post under blog/posts/ with filename format YYYY-MM-DD-short-title.md
• I used the metadata schema from blog/_template.md (title, author, date, tags, summary)
• My post is original and relevant to the 90DaysOfDevOps community topics
• I verified local markdown links and image paths
• I have read and followed CONTRIBUTING.md

[github-actions]

Thank you @Copilot for taking out your valuable time in order to contribute to our project. Looking forward for more such amazing contributions :)