Release v0.18.0

[dannywillems]

We need to do a new release v0.18.0

Make sure to add to the changelong the missing PRs:

• Update directory name for devnet circuit blobs #1413
• Updated circuit generation process #1433
• circuit-blobs: move from openmina to o1-labs organization #1412

Release process: https://o1-labs.github.io/mina-rust/docs/appendix/release-process

The assignee can suggest improvements to the release process.