Add change note

Author: joefarebrother

go/ql/src/change-notes/2025-11-10-inseucre-cookie.md

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+---
+category: newQuery
+---
+* The `go/cookie-http-only-not-set` query has been promoted from the experimental query pack. This query was originally contributed to the experimental query pack by @edvraa.
+* A new query `go/cookie-secure-not-set` has been added to detect cookies without the `Secure` flag set.