feat: add update password screen

[guillermomachado]

What does this do?

Adds a new screen to allow users to update their password.

How did you test this?

1. Create an account.
2. Go to Settings.
3. Press the "Password" list item.
4. Update your password.

The login should work with your new credentials.

Simulator.Screen.Recording.-.iPhone.SE.3rd.generation.-.2025-02-03.at.14.11.12.mp4

[github-actions]

💯 Test Coverage

Lines	Statements	Branches	Functions
	50% (341/682)	44.52% (122/274)	36.32% (85/234)

😎 Tests Results

Tests	Skipped	Failures	Errors	Time
77	0 💤	0 ❌	0 🔥	30.874s ⏱️

👀 Tests Details • (50%)

File	% Stmts	% Branch	% Funcs	% Lines	Uncovered Line #s
All files	50	44.52	36.32	50.3
api/auth	0	100	0	0
use-update-password.ts	0	100	0	0	30–43
app	0	0	0	0
_layout.tsx	0	0	0	0	22–86
update-password.tsx	0	100	0	0	15–59
app/(app)	0	0	0	0
settings.tsx	0	0	0	0	20–39