Update appsettings.json

Author: prjseal

PSW/PSW/appsettings.json

@@ -96,8 +96,23 @@
         "SupportPhase": "June 11, 2026",
         "SecurityPhase": "November 27, 2027",
         "EndOfLife": "November 27, 2028"
+      },
+      {
+        "Version": 18,
+        "ReleaseDate": "June 25, 2026",
+        "ReleaseType": "STS",
+        "SupportPhase": "December 10, 2026",
+        "SecurityPhase": "March 25, 2027",
+        "EndOfLife": "June 25, 2027"
+      },
+      {
+        "Version": 19,
+        "ReleaseDate": "December 10, 2026",
+        "ReleaseType": "STS",
+        "SupportPhase": "June 29, 2027",
+        "SecurityPhase": "September 10, 2027",
+        "EndOfLife": "December 10, 2027"
       }
-
     ]
   }
 }