pgsql: Last-minute updates for release notes.

Last-minute updates for release notes.

Security: CVE-2025-1094

Branch
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REL_15_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/1c77ff9f9a0278bb23b3629417ed7ce097c1697a

Modified Files
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doc/src/sgml/release-15.sgml | 96 ++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 96 insertions(+)