feat(prometheus): bump prometheus KONG_LATENCY_BUCKETS bucket to 6000 (#13588) (#10280)

FTI-5990

---------

Co-authored-by: Zachary Hu <[email protected]>
(cherry picked from commit d81973d)

Co-authored-by: Jun Ouyang <[email protected]>

Author: team-gateway-bot

changelog/unreleased/kong/bump-prometheus-latency-bucket.yml

@@ -0,0 +1,3 @@
+message: "**Prometheus**: Bumped KONG_LATENCY_BUCKETS bucket's maximal capacity to 6000"
+type: feature
+scope: Plugin

kong/plugins/prometheus/exporter.lua

@@ -24,7 +24,7 @@ local stream_available, stream_api = pcall(require, "kong.tools.stream_api")
 
 local role = kong.configuration.role
 
-local KONG_LATENCY_BUCKETS = { 1, 2, 5, 7, 10, 15, 20, 30, 50, 75, 100, 200, 500, 750, 1000 }
+local KONG_LATENCY_BUCKETS = { 1, 2, 5, 7, 10, 15, 20, 30, 50, 75, 100, 200, 500, 750, 1000, 3000, 6000 }
 local UPSTREAM_LATENCY_BUCKETS = { 25, 50, 80, 100, 250, 400, 700, 1000, 2000, 5000, 10000, 30000, 60000 }
 local AI_CACHE_FETCH_LATENCY_BUCKETS = { 1, 2, 5, 10, 15, 20, 30, 50, 75, 100, 200, 500, 750, 1000, 2000 }
 local AI_LLM_PROVIDER_LATENCY_BUCKETS = { 250, 500, 1000, 1500, 2000, 2500, 3000, 3500, 4000, 4500, 5000, 10000, 30000, 60000 }