ci: fix deny.toml deprecated keys (copyleft, unlicensed removed in cargo-deny)

deny.toml

@@ -20,15 +20,12 @@ allow = [
     "CC0-1.0",
     "OpenSSL",
     "Zlib",
-    "MPL-2.0",           # Mozilla Public License — ok for binary linking
+    "MPL-2.0",
 ]
-copyleft = "warn"        # GPL etc — warn, don't block
-unlicensed = "deny"
 
 [bans]
 multiple-versions = "warn"
 deny = [
-    # Prefer rustls over openssl for static builds and supply chain cleanliness
     { name = "openssl-sys" },
     { name = "openssl" },
 ]
@@ -37,5 +34,4 @@ skip = []
 [sources]
 unknown-registry = "warn"
 unknown-git = "warn"
-# Allow only the official crates.io index
 allow-registry = ["https://github.com/rust-lang/crates.io-index"]