Bump the minor-changes group with 4 updates (#179)

Bumps the minor-changes group with 4 updates:
[smallvec](https://github.com/servo/rust-smallvec),
[zeroize](https://github.com/RustCrypto/utils),
[k256](https://github.com/RustCrypto/elliptic-curves) and
[ed25519-dalek](https://github.com/dalek-cryptography/curve25519-dalek).

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Cargo.toml

@@ -42,15 +42,15 @@ sha2 = { version = "0.10", default-features = false }
 
 # Private dependencies (not exposed in the public API).
 lazy_static = { version = "1.4", optional = true }
-smallvec = "1.11.1"
+smallvec = "1.11.2"
 subtle = { version = "2.4.0", default-features = false }
-zeroize = { version = "1.1", features = ["zeroize_derive"] }
+zeroize = { version = "1.7", features = ["zeroize_derive"] }
 
 # Crypto backends (all public dependencies).
 secp256k1 = { version = "0.28", optional = true }
 
 [dependencies.k256]
-version = "0.13.0"
+version = "0.13.2"
 default-features = false
 features = ["ecdsa"]
 optional = true
@@ -68,7 +68,7 @@ features = ["sodiumoxide-crypto"]
 optional = true
 
 [dependencies.ed25519-dalek]
-version = "2.0.0"
+version = "2.1.0"
 optional = true
 default-features = false