[BUG]: Update `postcss` dependency version

[RushilJalal]

Is there an existing issue for this?

• [X] I have searched the existing issues

What happened?

On creating a clone of the repo and running npm i, I am told there are 5 moderate and 1 high vulnerabilties. I ran npm audit fix, where I'm asked to update the postcss version

Record

• [X] I agree to follow this project's Code of Conduct
• [X] I'm a GSSOC'24 contributor
• [X] I want to work on this issue

[github-actions[bot]]

Hello @RushilJalal! Thanks for creating issue #168 on #Indie-Kart/ecommerce-store.Please Comment /assign-me to self assign this issue to yourself, and please don't forget to star this repo.

[RushilJalal]

/assign-me