fix: resolve CI check failures

- Replace serde_yml with serde_norway (RUSTSEC-2025-0068: serde_yml is
  unsound and archived; serde_norway is the recommended maintained fork)
- Remove unused toml dependency (was resolving to v1.1.2 which requires
  edition2024/Rust 1.85, breaking the MSRV 1.80 check)
- Run cargo fmt to fix formatting diffs caught by lint job
- Fix cog commit check to use from_latest_tag so pre-conventional-commits
  history does not cause the check to fail
- Remove semver job: dredge is a binary-only crate with no lib target,
  cargo-semver-checks cannot check it

Cargo.toml

@@ -33,11 +33,10 @@ indoc = "2.0"
 log = "0.4"
 reqwest = { version = "0.12", features = ["json", "gzip", "multipart", "native-tls-vendored"] }
 serde = { version = "1.0", features = ["derive"] }
-serde_yml = "0.0.12"
 thiserror = "2.0"
-toml = "1.0"
 url = { version = "2.5", features = ["serde"] }
 tokio = { version = "1.52", features = ["macros"] }
+serde_norway = "0.9.42"
 
 [dev-dependencies]
 mockito = "1.7"