chore(CI): replace tag "39" with "latest"

Author: adf-patrickha

.github/workflows/molecule.yml

@@ -44,7 +44,7 @@ jobs:
           - image: "fedora"
             tag: "38"
           - image: "fedora"
-            tag: "39"
+            tag: "latest"
           - image: "opensuse"
             tag: "latest"
           - image: "ubuntu"