Finish bumping go to 1.23.3

Signed-off-by: Florent Poinsard <[email protected]>

.github/workflows/update_golang_version.yml

@@ -15,7 +15,7 @@ jobs:
       pull-requests: write
     strategy:
       matrix:
-        branch: [ main, release-21.0, release-20.0, release-19.0, release-18.0 ]
+        branch: [ main, release-21.0, release-20.0, release-19.0 ]
     name: Update Golang Version
     runs-on: ubuntu-latest
     steps:
@@ -39,8 +39,10 @@ jobs:
 
           if [ ${{ matrix.branch }} == "main" ]; then
             go run ./go/tools/go-upgrade/go-upgrade.go upgrade --main --allow-major-upgrade
-          else
+          else if [ ${{ matrix.branch }} == "release-21.0" ]; then
             go run ./go/tools/go-upgrade/go-upgrade.go upgrade
+          else
+            go run ./go/tools/go-upgrade/go-upgrade.go upgrade --workflow-update=false
           fi
 
           output=$(git status -s)

go.mod

@@ -1,6 +1,6 @@
 module vitess.io/vitess
 
-go 1.23.2
+go 1.23.3
 
 require (
 	cloud.google.com/go/storage v1.43.0