Update logstash_releases.json (#17253)

Update Logstash releases file with new 8.17 and 8.16 releases

Author: robbavey

Diff for: ci/logstash_releases.json

@@ -1,13 +1,13 @@
 {
   "releases": {
     "7.current": "7.17.28",
-    "8.previous": "8.16.4",
-    "8.current": "8.17.2"
+    "8.previous": "8.16.5",
+    "8.current": "8.17.3"
   },
   "snapshots": {
     "7.current": "7.17.29-SNAPSHOT",
-    "8.previous": "8.16.5-SNAPSHOT",
-    "8.current": "8.17.3-SNAPSHOT",
+    "8.previous": "8.16.6-SNAPSHOT",
+    "8.current": "8.17.4-SNAPSHOT",
     "8.next": "8.18.0-SNAPSHOT",
     "8.future": "8.19.0-SNAPSHOT",
     "9.next": "9.0.0-SNAPSHOT",