Update Cargo.lock to 0.10.0-pre.3

The 0.10.0-pre.3 version bump (61d629a) updated the workspace
Cargo.toml versions but not Cargo.lock, which stayed at 0.10.0-pre.2.
Any cargo invocation (including the c-bundle-validate CI job's
'cargo xtask build-bundled') rewrites the lockfile to match, leaving an
uncommitted Cargo.lock change that fails the job's 'git diff --quiet'
check. Regenerate the lockfile so it matches the committed Cargo.toml.

Author: penberg