Revert "Bump Go version to 1.23.6 (#30242)" (#30359)

This reverts commit acbbd4c58d.

server/build/Dockerfile.buildenv

@@ -1,4 +1,4 @@
-FROM golang:1.23.6-bullseye@sha256:80eb3147ef40b58d527d9c2e634b1a79a750aee09de6f973844db38b33f0550b
+FROM golang:1.22.6-bullseye@sha256:0838740c99e64dde1916553b004bdb1bc321823be83bde3d2a1563882eaab7e6
 
 RUN apt-get update && apt-get install -y make git apt-transport-https ca-certificates curl software-properties-common build-essential zip xmlsec1 jq pgloader