chore(deps): update docker.io/library/golang:1.26 docker digest to b54cbf5

Signed-off-by: Renovate Bot <renovate-bot@users.noreply.github.com>

Author: renovate[bot]

Dockerfile

@@ -1,5 +1,5 @@
 # Build the approver-policy binary
-FROM docker.io/library/golang:1.26@sha256:5f3787b7f902c07c7ec4f3aa91a301a3eda8133aa32661a3b3a3a86ab3a68a36 as builder
+FROM docker.io/library/golang:1.26@sha256:b54cbf583d390341599d7bcbc062425c081105cc5ef6d170ced98ef9d047c716 as builder
 
 WORKDIR /workspace
 # Copy the Go Modules manifests