chore(docs): add Dimitrios Liappis to humans.txt (#44483)

## I have read the
[CONTRIBUTING.md](https://github.com/supabase/supabase/blob/master/CONTRIBUTING.md)
file.

YES

## What kind of change does this PR introduce?

Docs update to `humans.txt` to add `Dimitrios Liappis`

## What is the current behavior?

`Dimitrios Liappis` does not exist in `humans.txt`

## What is the new behavior?

`Dimitrios Liappis` exists in `humans.txt`


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

* **Chores**
  * Updated contributor information.

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

apps/docs/public/humans.txt

@@ -66,6 +66,7 @@ David Weitzman
 Deepthi Sigireddi
 Deji I
 Dennis Senn
+Dimitrios Liappis
 Div Arora
 Divit D
 Douglas Hunley