Update IDF for download verification

wiki/src/install/v2/Tails/amd64/stable/latest.json

@@ -7,9 +7,9 @@
                 {
                     "target-files": [
                         {
-                            "sha256": "253596743ce53ec5f16cb863845d74e1c04da8204c6fb8f7072d5df8dee8d76a",
-                            "size": 1194328064,
-                            "url": "http://dl.amnesia.boum.org/tails/stable/tails-amd64-4.17/tails-amd64-4.17.img"
+                            "sha256": "a180f34468310fe0ece032fdb140851fa3f290d81663b9c38d42ea3e9f37c58d",
+                            "size": 1185939456,
+                            "url": "http://dl.amnesia.boum.org/tails/stable/tails-amd64-4.18/tails-amd64-4.18.img"
                         }
                     ],
                     "type": "img"
@@ -17,15 +17,15 @@
                 {
                     "target-files": [
                         {
-                            "sha256": "7491faeb137e933f4387b238ee1656b9559a42de9352a5118770733c7d45f340",
-                            "size": 1184440320,
-                            "url": "http://dl.amnesia.boum.org/tails/stable/tails-amd64-4.17/tails-amd64-4.17.iso"
+                            "sha256": "3f641eb6a735b4db48236b91455e1183b9841454c66e2b3aecfa1efb363c5255",
+                            "size": 1176215552,
+                            "url": "http://dl.amnesia.boum.org/tails/stable/tails-amd64-4.18/tails-amd64-4.18.iso"
                         }
                     ],
                     "type": "iso"
                 }
             ],
-            "version": "4.17"
+            "version": "4.18"
         }
     ],
     "product-name": "Tails"