Adding Fixed Advisory CGA-prjx-5fxc-wmgf for atuin (#28271)

Co-authored-by: octo-sts[bot] <157150467+octo-sts@users.noreply.github.com>

Author: octo-sts[bot]

atuin.advisories.yaml

@@ -155,6 +155,10 @@ advisories:
             componentType: rust-crate
             componentLocation: /usr/bin/atuin
             scanner: grype
+      - timestamp: 2026-01-07T11:49:42Z
+        type: fixed
+        data:
+          fixed-version: 18.10.0-r1
 
   - id: CGA-rcq6-qc98-r4jw
     aliases: