build: update go versions in CI to go1.25

Author: ncw

.github/workflows/build.yml

@@ -25,33 +25,33 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        job_name: ['go1.24', 'go1.23', 'go1.22', 'go1.21']
+        job_name: ['go1.25', 'go1.24', 'go1.23', 'go1.22']
 
         include:
-          - job_name: go1.24
+          - job_name: go1.25
             os: ubuntu-latest
-            go: '1.24.x'
+            go: '1.25.x'
             gotests: true
             integrationtest: true
             check: true
 
-          - job_name: go1.23
+          - job_name: go1.24
             os: ubuntu-latest
-            go: '1.23.x'
+            go: '1.24.x'
             gotests: true
             integrationtest: true
             check: false
 
-          - job_name: go1.22
+          - job_name: go1.23
             os: ubuntu-latest
-            go: '1.22.x'
+            go: '1.23.x'
             gotests: true
             integrationtest: true
             check: false
 
-          - job_name: go1.21
+          - job_name: go1.22
             os: ubuntu-latest
-            go: '1.21.x'
+            go: '1.22.x'
             gotests: true
             integrationtest: true
             check: false