Unable to enable dependency's features needed to build the crate

[nwalfield]

Steps to reproduce the bug with the above code

See the "Actual Behavior" section.

Actual Behaviour

$ git clone https://gitlab.com/sequoia-pgp/sequoia-cert-store.git
$ cd sequoia-cert-store
$ git checkout cee6bfd8
$ cargo set-version 0.5.1
   Upgrading sequoia-cert-store from 0.5.0 to 0.5.1
$ cargo semver-checks
     Parsing sequoia-cert-store v0.5.1 (current)
error: running cargo-doc on crate sequoia-cert-store failed with output:
-----
...
error: failed to run custom build command for `sequoia-openpgp v1.19.0`

Caused by:
  process didn't exit successfully: `/tmp/sequoia-cert-store/target/semver-checks/local-sequoia_cert_store-0_5_1/target/semver-checks/target/debug/build/sequoia-openpgp-a7260106954c3cab/build-script-build` (exit status: 1)
  --- stderr
  No cryptographic backend selected.

  Sequoia requires a cryptographic backend.  This backend is selected at compile
  time using feature flags.

  See https://crates.io/crates/sequoia-openpgp#crypto-backends
warning: build failed, waiting for other jobs to finish...

-----

error: failed to build rustdoc for crate sequoia-cert-store v0.5.1
note: this is usually due to a compilation error in the crate,
      and is unlikely to be a bug in cargo-semver-checks
note: the following command can be used to reproduce the compilation error:
      cargo new --lib example &&
          cd example &&
          echo '[workspace]' >> Cargo.toml &&
          cargo add --path /tmp/sequoia-cert-store --no-default-features --features  &&
          cargo check

error: aborting due to failure to build rustdoc for crate sequoia-cert-store v0.5.1

The error is because we didn't select a cryptographic backend.

Trying again:

$ cargo semver-checks --features sequoia-openpgp/crypto-nettle
     Parsing sequoia-cert-store v0.5.1 (current)
error: `cargo metadata` exited with an error: error: failed to parse manifest at `/tmp/sequoia-cert-store/target/semver-checks/local-sequoia_cert_store-0_5_1-aaa4629efb3c60e8/Cargo.toml`

Caused by:
  feature `sequoia-openpgp/crypto-nettle` in dependency `sequoia-cert-store` is not allowed to contain slashes
  If you want to enable features of a transitive dependency, the direct dependency needs to re-export those features from the `[features]` table.

Tools like cargo build don't impose this restriction. Although I could manually edit our Cargo.toml to select a backend:

$ git diff  Cargo.toml
diff --git a/Cargo.toml b/Cargo.toml
index 90ea46f..2b05ba1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "sequoia-cert-store"
 description = "A certificate database interface."
-version = "0.5.0"
+version = "0.5.1"
 authors = ["Neal H. Walfield <[email protected]>",
         "Justus Winter <[email protected]>"]
 homepage = "https://sequoia-pgp.org/"
@@ -26,7 +26,7 @@ num_cpus = "1"
 openpgp-cert-d = "0.3.1"
 parking_lot = "0.12"
 rayon = "1"
-sequoia-openpgp = { version = "1.19.0", default-features = false }
+sequoia-openpgp = { version = "1.19.0", features = ["crypto-nettle"] }
 sequoia-net = { version = "0.28", default-features = false }
 smallvec = "1.1"
 thiserror = "1.0.2"

Now, cargo semver-checks can build the current version, but it fails on the last version:

$ cargo semver-checks
     Parsing sequoia-cert-store v0.5.1 (current)
      Parsed [   9.515s] (current)
     Parsing sequoia-cert-store v0.5.0 (baseline)
error: running cargo-doc on crate sequoia-cert-store failed with output:
-----
...
error: failed to run custom build command for `sequoia-openpgp v1.19.0`

Caused by:
  process didn't exit successfully: `/tmp/sequoia-cert-store/target/semver-checks/registry-sequoia_cert_store-0_5_0/target/semver-checks/target/debug/build/sequoia-openpgp-a7260106954c3cab/build-script-build` (exit status: 1)
  --- stderr
  No cryptographic backend selected.

  Sequoia requires a cryptographic backend.  This backend is selected at compile
  time using feature flags.

  See https://crates.io/crates/sequoia-openpgp#crypto-backends
warning: build failed, waiting for other jobs to finish...

-----

error: failed to build rustdoc for crate sequoia-cert-store v0.5.0
note: this is usually due to a compilation error in the crate,
      and is unlikely to be a bug in cargo-semver-checks
note: the following command can be used to reproduce the compilation error:
      cargo new --lib example &&
          cd example &&
          echo '[workspace]' >> Cargo.toml &&
          cargo add sequoia-cert-store@=0.5.0 --no-default-features --features  &&
          cargo check

Expected Behaviour

I think cargo semver-checks should allow selecting the same features as cargo build.

Generated System Information

$ cargo semver-checks --bugreport
#### Software version

cargo-semver-checks 0.30.0

#### Operating system

Linux 6.1.0-17-amd64

#### Command-line

```bash
/home/us/.cargo/bin/cargo-semver-checks semver-checks --bugreport 

cargo version

> cargo -V 
cargo 1.75.0 (1d8b05cdd 2023-11-20)

Compile time information

• Profile: release
• Target triple: x86_64-unknown-linux-gnu
• Family: unix
• OS: linux
• Architecture: x86_64
• Pointer width: 64
• Endian: little
• CPU features: fxsr,sse,sse2
• Host: x86_64-unknown-linux-gnu

### Build Configuration

_No response_

### Additional Context

Thanks for working on this!