Update golang toolchain to 1.23.9 (#31062)

* Update golang toolchain

* remove comment

---------

Co-authored-by: Mattermost Build <build@mattermost.com>

server/.go-version

@@ -1 +1 @@
-1.23.7
+1.23.9

server/build/Dockerfile.buildenv

@@ -1,4 +1,4 @@
-FROM golang:1.23.7-bullseye@sha256:8731dcb40a7b879ccb493fa4fa38e83d9f33ca24ab60bec02e98d5af7e962cac
+FROM golang:1.23.9-bullseye@sha256:f2ea45502b0565bd554ed2d4954ef1eb434df07ff4cdb867fabb4d2a6b1c0668
 
 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
 

server/go.mod

@@ -2,9 +2,7 @@ module github.com/mattermost/mattermost/server/v8
 
 go 1.23.0
 
-toolchain go1.23.7
-
-//replace github.com/mattermost/mattermost/server/public => /Users/ibrahim/go/src/github.com/mattermost/mattermost-server/server/public
+toolchain go1.23.9
 
 require (
 	code.sajari.com/docconv/v2 v2.0.0-pre.4

server/public/go.mod

@@ -2,7 +2,7 @@ module github.com/mattermost/mattermost/server/public
 
 go 1.23.0
 
-toolchain go1.23.7
+toolchain go1.23.9
 
 require (
 	github.com/blang/semver/v4 v4.0.0