Update golang:1.23-alpine Docker digest to 47d3375

Author: renovate[bot]

Dockerfile

@@ -4,7 +4,7 @@ WORKDIR frontend
 RUN npm install
 RUN npm run build
 
-FROM golang:1.23-alpine@sha256:c23339199a08b0e12032856908589a6d41a0dab141b8b3b21f156fc571a3f1d3 AS build_go
+FROM golang:1.23-alpine@sha256:47d337594bd9e667d35514b241569f95fb6d95727c24b19468813d596d5ae596 AS build_go
 ARG cmd=ssl-status-board
 WORKDIR work
 COPY . .