Error when validating prdoc in a PR that introduce a new crate

[gui1117]

In this PR paritytech/polkadot-sdk#6140 I introduce a new crate in the workspace.

the semver check using parity publish is failing with:

 validating prdocs...
checking file changes...
checking dep changes...
Error: no dep

Stack backtrace:
   0: parity_publish::prdoc::get_dep
   1: parity_publish::prdoc::manifest_deps_changed
   2: parity_publish::prdoc::handle_prdoc
   3: parity_publish::main::{{closure}}
   4: tokio::runtime::park::CachedParkThread::block_on
   5: tokio::runtime::context::runtime::enter_runtime
   6: tokio::runtime::runtime::Runtime::block_on
   7: parity_publish::main
   8: std::sys::backtrace::__rust_begin_short_backtrace
   9: std::rt::lang_start::{{closure}}
  10: std::rt::lang_start_internal
  11: main
  12: __libc_start_main
  13: _start

https://github.com/paritytech/polkadot-sdk/actions/runs/12111543947/job/33763614902?pr=6140