Update miniscript dependency to 9.0.1

[soenkehahn]

Version 9.0.0 was yanked, see here:

• https://github.com/rust-bitcoin/rust-miniscript/blob/9.x-branch/CHANGELOG.md#901---march-8-2023
• https://crates.io/crates/miniscript/versions

I noticed this when running:
cargo install --offline --frozen --path .

Which gives a warning about using yanked versions from crates.io.

[casey]

Should we also change the Cargo.toml file? Since the lock file is sometimes ignored, maybe we should. Not sure what best practices are here.

[soenkehahn]

Should we also change the Cargo.toml file? Since the lock file is sometimes ignored, maybe we should. Not sure what best practices are here.

I think cargo would already prefer 9.0.1 over 9.0.0 without changing the Cargo.toml file, since 9.0.0 is yanked. I also think bumping the version in Cargo.toml doesn't hurt. If anything it prevents people from using a yanked version. So I changed it.

(Also not 100% sure about how this works and what best practices are.)

[casey]

Should we also change the Cargo.toml file? Since the lock file is sometimes ignored, maybe we should. Not sure what best practices are here.

I think cargo would already prefer 9.0.1 over 9.0.0 without changing the Cargo.toml file, since 9.0.0 is yanked. I also think bumping the version in Cargo.toml doesn't hurt. If anything it prevents people from using a yanked version. So I changed it.

(Also not 100% sure about how this works and what best practices are.)

Seems reasonable to me! Merging.