Update logstash images to the most recent bump

Used elastic#30012 found on https://github.com/elastic/beats/pulls?q=is%3Apr+label%3Abuild-monitoring+is%3Aclosed

metricbeat/module/logstash/docker-compose.yml

@@ -2,25 +2,25 @@ version: '2.3'
 
 services:
   logstash:
-    image: docker.elastic.co/integrations-ci/beats-logstash:${LOGSTASH_VERSION:-8.1.0-SNAPSHOT}-1
+    image: docker.elastic.co/integrations-ci/beats-logstash:${LOGSTASH_VERSION:-8.1.0-aa69d697-SNAPSHOT}-1
     build:
       context: ./_meta
       args:
-        LOGSTASH_VERSION: ${LOGSTASH_VERSION:-8.1.0-SNAPSHOT}
+        LOGSTASH_VERSION: ${LOGSTASH_VERSION:-8.1.0-aa69d697-SNAPSHOT}
     ports:
-      - 9600
+      - "9600"
     depends_on:
       - elasticsearch
 
   elasticsearch:
-    image: docker.elastic.co/integrations-ci/beats-elasticsearch:${ELASTICSEARCH_VERSION:-8.1.0-SNAPSHOT}-1
+    image: docker.elastic.co/integrations-ci/beats-elasticsearch:${ELASTICSEARCH_VERSION:-8.1.0-aa69d697-SNAPSHOT}-1
     build:
       context: ../elasticsearch/_meta
       args:
-        ELASTICSEARCH_VERSION: ${ELASTICSEARCH_VERSION:-8.1.0-SNAPSHOT}
+        ELASTICSEARCH_VERSION: ${ELASTICSEARCH_VERSION:-8.1.0-aa69d697-SNAPSHOT}
     environment:
       - "network.host="
       - "transport.host=127.0.0.1"
       - "http.host=0.0.0.0"
     ports:
-      - 9200
+      - "9200"