Update Rust crate sequoia-openpgp to 1.13

Author: renovate[bot]

Cargo.lock

@@ -51,7 +51,7 @@ same-file = "1"
 scopeguard = "1"
 semver = "1.0"
 serde = {version = "1.0", features = ["derive"]}
-sequoia-openpgp = { version = "1.5", default-features = false, features = ["crypto-rust", "allow-experimental-crypto", "allow-variable-time-crypto"] }
+sequoia-openpgp = { version = "1.13", default-features = false, features = ["crypto-rust", "allow-experimental-crypto", "allow-variable-time-crypto"] }
 sha2 = "0.10"
 sharded-slab = "0.1.1"
 strsim = "0.10"