update file: gradle.version.json.

Author: elliotantonia

gradle.version.json

@@ -1780,6 +1780,19 @@
       "extra": ""
     }
   ],
+  "8.13": [
+    {
+      "url": "https://services.gradle.org/distributions/gradle-8.13-all.zip",
+      "arch": "any",
+      "os": "any",
+      "sum": "fba8464465835e74f7270bbf43d6d8a8d7709ab0a43ce1aa3323f73e9aa0c612",
+      "sum_type": "sha256",
+      "size": 0,
+      "installer": "unarchiver",
+      "lts": "",
+      "extra": ""
+    }
+  ],
   "8.2": [
     {
       "url": "https://services.gradle.org/distributions/gradle-8.2-all.zip",