Fix failing publish-dry-run CI job

[elizabethengelman]

It looks like this is failing because the stellar-ledger crate is not being included in the vendor dir or being picked up in cargo-workspaces - presumably because it has not yet been published.

Now that the stellar ledger work has been
merged and it's slip10 dependency vulnerability issue is closed should we publish stellar-ledger?

   Packaging soroban-cli v22.2.0 (/home/runner/work/stellar-cli/stellar-cli/cmd/soroban-cli)
error: failed to prepare local package for uploading

Caused by:
  no matching package named `stellar-ledger` found
  location searched: directory source `/home/runner/work/stellar-cli/stellar-cli/vendor` (which is replacing registry `crates-io`)
  required by package `soroban-cli v22.2.0 (/home/runner/work/stellar-cli/stellar-cli/cmd/soroban-cli)`