Increase disk for ES snapshot build

[delanni]

Summary

Docker image build and push for ES snapshot build fails silently because of disk size issues: https://buildkite.com/elastic/kibana-elasticsearch-snapshot-build/builds/6932

This in turn causes failed Cloud deployments, because of missing images:
https://buildkite.com/elastic/kibana-deploy-cloud-from-pr/builds/435#01997647-fc3d-451b-9cc2-4602bef8ab5c

cc: @jbudz - this section is running with no error propagation - is this still relevant? Can we make the error ignore more specific for the mentioned cases?

kibana/.buildkite/scripts/steps/es_snapshots/build.sh

Lines 92 to 108 in 5245f40

	# Ignore build failures. This docker image downloads metricbeat and filebeat.
	# When we bump versions, these dependencies may not exist yet, but we don't want to
	# block the rest of the snapshot promotion process
	set +e
	./gradlew :distribution:docker:cloud-ess-docker-export:assemble && {
	ES_CLOUD_ID=$(docker images "docker.elastic.co/elasticsearch/elasticsearch-cloud-ess" --format "{{.ID}}")
	ES_CLOUD_VERSION=$(docker images "docker.elastic.co/elasticsearch/elasticsearch-cloud-ess" --format "{{.Tag}}")
	KIBANA_ES_CLOUD_VERSION="$ES_CLOUD_VERSION-$ELASTICSEARCH_GIT_COMMIT"
	KIBANA_ES_CLOUD_IMAGE="docker.elastic.co/kibana-ci/elasticsearch-cloud-ess:$KIBANA_ES_CLOUD_VERSION"
	echo $ES_CLOUD_ID $ES_CLOUD_VERSION $KIBANA_ES_CLOUD_VERSION $KIBANA_ES_CLOUD_IMAGE
	docker tag "$ES_CLOUD_ID" "$KIBANA_ES_CLOUD_IMAGE"
	docker_with_retry push "$KIBANA_ES_CLOUD_IMAGE"
	export ELASTICSEARCH_CLOUD_IMAGE="$KIBANA_ES_CLOUD_IMAGE"
	export ELASTICSEARCH_CLOUD_IMAGE_CHECKSUM="$(docker images "$KIBANA_ES_CLOUD_IMAGE" --format "{{.Digest}}")"
	}

[jbudz]

this section is running with no error propagation - is this still relevant? Can we make the error ignore more specific for the mentioned cases?

Yep, it can still fail after version bumps. It's worth making the error more specific, making a note to find an example

[elasticmachine]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: 0ebe53f

Failed CI Steps

• Jest Integration Tests #2
• x-pack/solutions/observability/test/serverless/functional/configs/config.ts
• FTR Configs #27
• FTR Configs #87

Test Failures

• [job] [logs] FTR Configs #27 / endpoint endpoint list when initially navigating to page when there is data, "after all" hook for "does not show the details flyout initially"
• [job] [logs] FTR Configs #87 / endpoint endpoint list when initially navigating to page when there is data, "after all" hook for "does not show the details flyout initially"
• [job] [logs] x-pack/solutions/observability/test/serverless/functional/configs/config.ts / serverless observability UI Dataset Quality Dataset quality user privileges "before all" hook for "does not show size and last activity columns for underprivileged data stream"

Metrics [docs]

✅ unchanged