Update golang:latest Docker digest to 9820aca (#59)

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@sha256:585103a29aa6d4c98bbb45d2446e1fdf41441698bbdf707d1801f5708e479f04 as builder
+FROM golang:latest@sha256:9820aca42262f58451f006de3213055974b36f24b31508c1baa73c967fcecb99 as builder
 ARG TARGETOS
 ARG TARGETARCH
 ARG BUILD_FLAGS=""