Update golang:latest Docker digest to 9e56f0d (#191)

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

Author: renovate[bot]

Dockerfile

@@ -1,6 +1,6 @@
 
 # Build a go app into a minimal docker image with timezone support and SSL cert chains.
-FROM golang:latest@sha256:034848561f95a942e2163d9017e672f0c65403f699336db4529a908af00dfc98 as builder
+FROM golang:latest@sha256:9e56f0d0f043a68bb8c47c819e47dc29f6e8f5129b8885bed9d43f058f7f3ed6 as builder
 ARG TARGETOS
 ARG TARGETARCH
 ARG BUILD_FLAGS=""