Update x509-certificate requirement from 0.22 to 0.23

Updates the requirements on [x509-certificate](https://github.com/indygreg/cryptography-rs) to permit the latest version.
- [Changelog](https://github.com/indygreg/cryptography-rs/blob/main/release.toml)
- [Commits](indygreg/cryptography-rs@cryptographic-message-syntax/0.22.0...x509-certificate/0.23.0)

---
updated-dependencies:
- dependency-name: x509-certificate
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Cargo.toml

@@ -69,7 +69,7 @@ io-extras = "0.18.0"
 serde-xml-rs = { version = "0.6" , optional = true } # for reading spec-mandated XML config files
 glob = { version = "0.3" , optional = true } # for reading spec-mandated XML config files
 mailparse = { version = "0.14" , optional = true } # for reading S/MIME-encoded (XML) config files
-x509-certificate = { version = "0.22" , optional = true } # for configuration certificates
+x509-certificate = { version = "0.23" , optional = true } # for configuration certificates
 x509-cert = { version = "0.2" , optional = true }
 tempfile = { version = "3" , optional = true } # for calling external openssl command. Remove when no longer used.
 newline-converter = { version = "0.3" , optional = true } # helper for handling S/MIME