chore: add Unlicense to allowed licenses (OSI/FSF approved)

Author: fgogolli

.github/workflows/security-code.yml

@@ -112,7 +112,7 @@ jobs:
       uses: actions/dependency-review-action@v4
       with:
         fail-on-severity: moderate
-        allow-licenses: MIT, Apache-2.0, BSD-2-Clause, BSD-3-Clause, ISC
+        allow-licenses: MIT, Apache-2.0, BSD-2-Clause, BSD-3-Clause, ISC, Unlicense
 
   codeql-analysis:
     name: CodeQL Analysis