[updatecli] update elastic stack version for testing 8.15.0-053650c4-SNAPSHOT (#3492)

* chore: Update snapshot.yml

Made with ❤️️ by updatecli

* chore: Update snapshot.yml

Made with ❤️️ by updatecli

* chore: Update snapshot.yml

Made with ❤️️ by updatecli

---------

Co-authored-by: apmmachine <apmmachine@users.noreply.github.com>
Co-authored-by: Michel Laterman <82832767+michel-laterman@users.noreply.github.com>

Author: apmmachine

dev-tools/integration/.env

@@ -1,6 +1,6 @@
 # If you use change this version without a pinned one, please update
 # .ci/bump-elastic-stack-snapshot.yml or .github/workflows/bump-golang.yml
-ELASTICSEARCH_VERSION=8.14.0-318ae53b-SNAPSHOT
+ELASTICSEARCH_VERSION=8.15.0-053650c4-SNAPSHOT
 ELASTICSEARCH_USERNAME=elastic
 ELASTICSEARCH_PASSWORD=changeme
 TEST_ELASTICSEARCH_HOSTS=localhost:9200