chore(deps): update docker.io/library/golang:1.25.5 docker digest to a22b2e6

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:1.25.5@sha256:20b91eda7a9627c127c0225b0d4e8ec927b476fa4130c6760928b849d769c149
+ARG GOLANG_IMAGE=docker.io/library/golang:1.25.5@sha256:a22b2e6c5e753345b9759fba9e5c1731ebe28af506745e98f406cc85d50c828e
 # BUILDPLATFORM is an automatic platform ARG enabled by Docker BuildKit.
 # Represents the plataform where the build is happening, do not mix with
 # TARGETARCH