[8.16] Bump stack version (#596)

Author: wangch079

.backportrc.json

@@ -1,14 +1,12 @@
 {
   "targetBranchChoices": [
     { "name": "main", "checked": true },
-    "8.11",
-    "8.10",
-    "8.9"
+    "8.16"
   ],
   "fork": false,
   "targetPRLabels": ["backport"],
   "branchLabelMapping": {
-    "^v8.12.0$": "main",
+    "^v8.17.0$": "main",
     "^v(\\d+).(\\d+)(.\\d+)+$": "$1.$2"
   },
   "upstream": "elastic/connectors-ruby"

VERSION

@@ -1 +1 @@
-8.16.0.0
+8.17.0.0