Add new iOS versions and build numbers

Author: DonnchaC

src/mvt/ios/data/ios_versions.json

@@ -1200,6 +1200,10 @@
         "version": "18.7.7",
         "build": "22H333"
     },
+    {
+        "version": "18.7.8",
+        "build": "22H352"
+    },
     {
         "version": "26",
         "build": "23A341"
@@ -1231,5 +1235,9 @@
     {
         "version": "26.4",
         "build": "23E246"
+    },
+    {
+        "version": "26.4.2",
+        "build": "23E261"
     }
 ]