With the last patch introducing the rust workspace the location of
Cargo.lock has changed. Therefore, remove all crate level lock-files and
add rust/Cargo.lock as the only lock-file.
Steps to reproduce:
```
cd rust
mv pvsecret/Cargo.lock .
cargo build
cargo update -p openssl
cargo update -p curl-sys
cargo update -p rustix
```
While at it update some dependencies to get fixes for security issues.
Reviewed-by: Marc Hartmayer <marc@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
