Merge pull request #99 from hnez/cargo-deny-2025-08-15

cargo deny: use -only and -or-later suffixes for GPL licenses

Author: hnez

deny.toml

@@ -34,8 +34,8 @@ allow = [
     "BSD-2-Clause",
     "BSD-3-Clause",
     "CC0-1.0",
-    "GPL-2.0",
-    "LGPL-2.1 WITH GCC-exception-2.0",
+    "GPL-2.0-only",
+    "LGPL-2.1-or-later WITH GCC-exception-2.0",
     "MIT",
     "Unicode-3.0",
     "Unicode-DFS-2016",