Update 3.9 to 3.9.18

Author: docker-library-bot

3.9/alpine3.17/Dockerfile

@@ -130,6 +130,6 @@
       "alpine3.18",
       "alpine3.17"
     ],
-    "version": "3.9.17"
+    "version": "3.9.18"
   }
 }