Update manifest SurgeXTRack to 2.1.8.0

manifests-cache.json

@@ -12288,7 +12288,7 @@
         "creationTimestamp": 1674371175.371694
       }
     },
-    "buildTimestamp": 1685376561.9991128
+    "buildTimestamp": 1691735800.4549572
   },
   "AaronKarp-EarthTones": {
     "buildTimestamp": 1673293386.5852942,

manifests/SurgeXTRack.json

@@ -1,7 +1,7 @@
 {
   "slug": "SurgeXTRack",
   "name": "Surge XT",
-  "version": "2.1.6.0",
+  "version": "2.1.8.0",
   "license": "GPL-3.0-or-later",
   "author": "Surge Synth Team",
   "authorEmail": "",