chore(deps): update docker.io/library/golang:1.26.1 docker digest to c42e4d7

Signed-off-by: renovate[bot] <bot@renovateapp.com>

Author: renovate[bot]

Dockerfile

@@ -1,7 +1,7 @@
 # Copyright Authors of Cilium
 # SPDX-License-Identifier: Apache-2.0
 
-ARG GOLANG_IMAGE=docker.io/library/golang:1.26.1@sha256:c7e98cc0fd4dfb71ee7465fee6c9a5f079163307e4bf141b336bb9dae00159a5
+ARG GOLANG_IMAGE=docker.io/library/golang:1.26.1@sha256:c42e4d75186af6a44eb4159dcfac758ef1c05a7011a0052fe8a8df016d8e8fb9
 # BUILDPLATFORM is an automatic platform ARG enabled by Docker BuildKit.
 # Represents the plataform where the build is happening, do not mix with
 # TARGETARCH