Added Potpie to project list

[ayush2390]

Please confirm this pull request meets the following requirements:

• I followed the contributing guidelines: https://github.com/github/india/blob/main/CONTRIBUTING.md.

Which change are you proposing?

• Adding/updating open source project/s
• Adding/updating maintainer/s

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Adding/updating open source project/s

• The project was built in or receives significant contributions from India
• The project has at least 100 stargazers

Why should this open source project be featured?

Potpie is an open-source platform that helps the developers to build custom AI Agents that truly understand their codebase

Adding/updating maintainer/s

• Maintainer's location on their GitHub profile indicates as India
• Maintainer has approved this PR to be included on the website

What open source project/s does the individual maintain?

https://github.com/potpie-ai/potpie

Something that does not neatly fit into the binary options above

• My suggested edits are not about an existing page, or at least not a single one

I have added the Potpie in the projects list and Dhiren Mathur in the maintainers list.

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Please note: we will close your PR without comment if you do not check the boxes above and provide ALL requested information.