Update `toml` to latest version

Most notably, this fixes the one known instance of a crate version being specified outside of the workspace - the pijul crate was depending on version 0.5 to avoid errors from a breaking change (toml now deserializes from strings, rather than bytes).

Created by  finchie  on May 16, 2025
33LXFADR7356GG6L6Q3RDCSXELOOKOICMMLNICIK7IXF2SDXDK3AC
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