fix: add return type to sendSubscriptionChangeWebhookSlackNotificatio… #173

Job	Run time
compile-accounts	37s
compile-admin-dashboard	47s
compile-api-reference	40s
compile-app	47s
compile-common	59s
compile-copilot	41s
compile-dashboard	1m 10s
compile-docs-reference	38s
compile-e2e	1m 52s
compile-fluent-ingest	39s
compile-home	40s
compile-incoming-request-ingest	39s
compile-infrastructure-agent	21s
compile-isolated-vm	38s
compile-nginx	36s
compile-open-telemetry-ingest	41s
compile-probe	35s
compile-probe-ingest	38s
compile-status-page	40s
compile-worker	40s
compile-test-server	38s
compile-workflow	43s
	16m 19s

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