Update golang:latest Docker digest to 8956c08 (#47)

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

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:d56c3e08fe5b27729ee3834854ae8f7015af48fd651cd25d1e3bcf3c19830174 as builder
+FROM golang:latest@sha256:8956c08c8129598db36e92680d6afda0079b6b32b93c2c08260bf6fa75524e07 as builder
 ARG TARGETOS
 ARG TARGETARCH
 ARG BUILD_FLAGS=""