This update for coredns fixes the following issues:
Changes in coredns:
Update to 1.15.0:
Fixes VUL-0: CVE-2026-78669: excessive CPU consumption in HTTP/2 (boo#1285501)
and CVE-2026-97032: HTTP/2 server crash due to HPACK encoder
race (boo#1287577) by bumping vendored golang.org/x/net to
v0.60.0.
Drops temporary google.golang.org/grpc pin for CVE-2026-84304 as upstream
now vendors v1.84.0.
plugin/cache: cache SERVFAIL when resolver fails without response
plugin/forward: support DNS-over-QUIC upstreams
core: add opt-in JSON logging with structured DNS query fields
New features: SIIT support, expr-lang templates, PROXY protocol v2 metadata