Update build tools changelog schema for label rename (#88033)

The `:Data Management/Ingest` label was recently renamed to `:Data
Management/Ingest Node`. This commit changes the build tools changelog
schema to know about the rename.

Author: dakrone

build-tools-internal/src/main/resources/changelog-schema.json

@@ -56,6 +56,7 @@
             "Infra/Settings",
             "Infra/Transport API",
             "Ingest",
+            "Ingest Node",
             "Java High Level REST Client",
             "Java Low Level REST Client",
             "License",