Update golang Docker tag to v1.26.5 (release-2026-lts) (#10385)

Update golang Docker tag to v1.26.5

| datasource | package | from   | to     |
| ---------- | ------- | ------ | ------ |
| docker     | golang  | 1.26.4 | 1.26.5 |

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

Makefile

@@ -23,7 +23,7 @@ GOVULNCHECK_VERSION ?= v1.1.4
 
 GO_DOCKER_IMAGE_NAME    ?= golang
 # renovate: datasource=docker depName=golang versioning=docker
-GO_DOCKER_IMAGE_VERSION ?= 1.26.4-trixie
+GO_DOCKER_IMAGE_VERSION ?= 1.26.5-trixie
 GO_DOCKER_IMAGE         ?= $(GO_DOCKER_IMAGE_NAME):$(GO_DOCKER_IMAGE_VERSION)
 
 REGISTRY                      ?= ## The registry where the image is located.

build/Dockerfile

@@ -16,7 +16,7 @@ ARG PACKAGE_REPO=pkgs.nginx.com
 
 
 ############################################# Base images containing libs for FIPS #############################################
-FROM golang:1.26.4-alpine@sha256:f33ee4cd42bb16e731cb7e8a1fba2b4ec562ed61ed30834580e4ac24be8ed3cf AS golang-builder
+FROM golang:1.26.5-alpine@sha256:739b5c7c89c2ba19b5744fab836efe973158e2c4b08808e99285f735af3e2926 AS golang-builder
 
 ############################################# NGINX files #############################################
 FROM scratch AS nginx-files