Update docker.elastic.co/logstash/logstash-oss Docker tag to v8.19.23

.changes/unreleased/Release-renovate-1791597787102.yaml

@@ -0,0 +1,7 @@
+kind: Release
+body: |
+  - docker.elastic.co/logstash/logstash-oss: 8.1.0-amd64 ->  8.19.23-amd64
+
+time: 2026-10-10T02:03:07+00:00
+custom:
+  Issue: ""

docker/logstash/Dockerfile

@@ -1,4 +1,4 @@
-FROM docker.elastic.co/logstash/logstash-oss:8.1.0-amd64
+FROM docker.elastic.co/logstash/logstash-oss:8.19.23-amd64@sha256:ff75c74eb5c11e570a5038f8dfbb1561c4ba0d5fe78ac3744a0d41206014fbe4
 
 RUN \
   bin/logstash-plugin install logstash-output-gelf \