Update golang Docker tag to v1.22.4

Update golang from 1.22.3 to 1.22.4

Change-type: patch

Author: balena-renovate[bot]

Dockerfile

@@ -1,7 +1,7 @@
 # FIXME: https://github.com/palantir/policy-bot/issues/558
 
 # https://github.com/palantir/policy-bot/blob/develop/.palantir/go-version
-FROM golang:1.22.3-alpine3.19 AS build
+FROM golang:1.22.4-alpine3.19 AS build
 
 WORKDIR /src