bump go to 1.26.4

Signed-off-by: Fedor Partanskiy <fredprtnsk@gmail.com>

Author: pfi79

core/chaincode/platforms/golang/testdata/src/chaincodes/toolchain/go.mod

@@ -2,6 +2,6 @@ module github.com/hyperledger/fabric/core/chaincode/platforms/golang/testdata/sr
 
 go 1.25.10
 
-toolchain go1.26.3
+toolchain go1.26.4
 
 // This should not get included in packages that were created from a GOPATH

docs/source/prereqs.md

@@ -73,8 +73,8 @@ Optional: Install the latest Fabric supported version of [Go](https://golang.org
 installed (only required if you will be writing Go chaincode or SDK applications).
 
 ```shell
-brew install go@1.26.3
-go version # => go1.26.3 darwin/amd64
+brew install go@1.26.4
+go version # => go1.26.4 darwin/amd64
 ```
 
 ### JQ

go.mod

@@ -1,6 +1,6 @@
 module github.com/hyperledger/fabric
 
-go 1.26.3
+go 1.26.4
 
 require (
 	code.cloudfoundry.org/clock v1.15.0

integration/chaincode/module/go.mod

@@ -1,6 +1,6 @@
 module module
 
-go 1.26.3
+go 1.26.4
 
 require (
 	github.com/hyperledger/fabric-chaincode-go/v2 v2.0.0-20240802023949-a356b32676fd

tools/go.mod

@@ -1,6 +1,6 @@
 module tools
 
-go 1.26.3
+go 1.26.4
 
 tool (
 	github.com/AlekSi/gocov-xml

vagrant/golang.sh

@@ -5,7 +5,7 @@
 # SPDX-License-Identifier: Apache-2.0
 
 GOROOT='/opt/go'
-GO_VERSION=1.26.3
+GO_VERSION=1.26.4
 
 # ----------------------------------------------------------------
 # Install Golang