feat: revert rogue changes to Cargo.lock

top-level Cargo.toml patches crates.io to point to the in-tree versions
of several crates. Revert some of the changes introduced by the commit
98957ae ("x509-cert: add certificate builder (RustCrypto#764)") which gets
overriden again by the patch.crates.io config.

Signed-off-by: Dmitry Baryshkov <[email protected]>

Author: lumag