build: standardize to der=0.8.0

Author: bordumb

Cargo.lock

@@ -60,7 +60,7 @@ log = "0.4.27"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0.140"
 pkcs8 = "0.10"
-der = { version = "0.7", features = ["oid"] }
+der = { version = "0.8.0", features = ["oid"] }
 env_logger = "0.11.8"
 config = { version = "0.15.19", features = ["toml"] }
 toml = "1.0.2"