docs: add Mike Podobnik to humans.txt (#50779)

## Problem

Mike Podobnik is missing from the team list in
`apps/docs/public/humans.txt`.

## Solution

Add Mike Podobnik between Michelle Jubrey and Miranda Limonczenko,
preserving alphabetical placement and the existing plain-text format.

## Review instructions

1. Confirm the diff adds only `Mike Podobnik`.
2. Verify the name appears between Michelle Jubrey and Miranda
Limonczenko.

## Validation

- `git diff --check` passes.
- Verified a single insertion, no deletions, and correct alphabetical
placement between the adjacent entries.
- Build and application tests skipped for this static text-only
addition. The repository's Prettier check does not include `.txt` files.

## Checklist

- [x] I have read
[CONTRIBUTING.md](https://github.com/supabase/supabase/blob/master/CONTRIBUTING.md).
- Docs topic authoring checklist is not applicable: this change only
adds a name to a plain-text team list.


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **Documentation**
  * Added Mike Podobnik to the team listing.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Co-authored-by: Ivan Vasilov <vasilov.ivan@gmail.com>

apps/docs/public/humans.txt

@@ -222,6 +222,7 @@ Mats Kindahl
 Mert Yerekapan
 Michal Kleczek
 Michelle Jubrey
+Mike Podobnik
 Miranda Limonczenko
 Mo Khan
 Monica Khoury