Fix: removed negation from if in workflow

Author: Its4Nik

.github/workflows/validation.yaml

@@ -202,7 +202,7 @@ jobs:
       actions: read
       contents: read
     runs-on: ubuntu-24.04
-    if: "!github.event.release.prerelease"
+    if: "github.event.release.prerelease"
     needs: [test-building, Anchore, CodeQL]
     steps:
       - name: Checkout Repository