meta: update release.yml for security information

Author: ethomson

.github/release.yml

@@ -6,10 +6,13 @@ changelog:
   - title: Bug fixes
     labels:
     - bug
+  - title: Security fixes
+    labels:
+    - security
   - title: Code cleanups
     labels:
     - cleanup
-  - title: CI improvements
+  - title: Build and CI improvements
     labels:
     - build
   - title: Documentation improvements