build(deps): bump secp256k1 from 0.28.0 to 0.28.1 (#1341)

Bumps [secp256k1](https://github.com/rust-bitcoin/rust-secp256k1) from 0.28.0 to 0.28.1.
- [Changelog](https://github.com/rust-bitcoin/rust-secp256k1/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-bitcoin/rust-secp256k1/compare/secp256k1-0.28.0...secp256k1-0.28.1)

---
updated-dependencies:
- dependency-name: secp256k1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Cargo.toml

@@ -139,7 +139,7 @@ bip39 = "2.0.0"
 hmac = "0.12.1"
 pbkdf2 = { version = "0.12.2", default-features = false }
 schnorrkel = "0.11.4"
-secp256k1 = "0.28.0"
+secp256k1 = "0.28.1"
 secrecy = "0.8.0"
 sha2 = "0.10.8"
 zeroize = { version = "1", default-features = false }