v0.1.2

Mojo nightly bump to 1.0.0b1.dev2026042717. Source-only conda
distribution unchanged from v0.1.1.

The Mojo 1.0.0b1 nightly makes def a real closure type with
explicit capture conventions; the function-pointer parameters
in forall / forall_bytes / minimize_bytes / FuzzTarget
are now annotated with the thin keyword to keep them as
no-capture function types and preserve auto-coercion of plain
def literals at the call site. No changes to the calling
contract; existing user code continues to work unchanged.

Install:

```toml
mozz = { git = "https://github.com/ehsanmok/mozz.git", tag = "v0.1.2" }
```