Update changenote

Author: joefarebrother

python/ql/src/change-notes/2025-09-19-insecure-cookie.md

@@ -1,4 +1,4 @@
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 category: minorAnalysis
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-* The `py/insecure-cookie` query has been split into multiple queries; with `py/insecure-cookie` checking for cases in which `Secure` flag is not set, `py/client-exposed-cookie` checking for cases in which the `HttpOnly` flag is not set, and the `py/samesite-none` query checking for cases in which the `SameSite` attribute is set to `None`. 
+* The `py/insecure-cookie` query has been split into multiple queries; with `py/insecure-cookie` checking for cases in which `Secure` flag is not set, `py/client-exposed-cookie` checking for cases in which the `HttpOnly` flag is not set, and the `py/samesite-none` query checking for cases in which the `SameSite` attribute is set to `None`. These queries also now only alert for cases in which the cookie is detected to contain sensitive data.