🌱 chore: upgrade to go 1.26 (#558)

Upgrades Go version from 1.25 to 1.26.

Changes:
- go.mod — go directive updated to 1.26.0
- .github/workflows/tests.yaml — GO_VERSION updated to 1.26
- .github/workflows/release.yaml — GO_VERSION updated to 1.26
- .github/workflows/ocm.yml — GO_VERSION updated to 1.26

Relates to: open-cluster-management-io/ocm#1555

Signed-off-by: Tesshu Flower <tflower@redhat.com>

Author: tesshuflower

.github/workflows/ocm.yml

@@ -5,7 +5,7 @@ on:
     repository_dispatch:
         types: [ocm_changes]
 env:
-  GO_VERSION: '1.25'
+  GO_VERSION: '1.26'
 
 jobs:
     e2e-test:

.github/workflows/release.yaml

@@ -9,7 +9,7 @@ on:
 name: Create Release
 
 env:
-  GO_VERSION: "1.25"
+  GO_VERSION: "1.26"
 
 jobs:
   build:

.github/workflows/tests.yaml

@@ -9,7 +9,7 @@ on:
     branches: [ main, release-* ]
 
 env:
-  GO_VERSION: '1.25'
+  GO_VERSION: '1.26'
 
 jobs:
   verify:

go.mod

@@ -1,6 +1,6 @@
 module open-cluster-management.io/clusteradm
 
-go 1.25.0
+go 1.26.0
 
 require (
 	github.com/briandowns/spinner v1.23.0