bump go version in GHA

Author: Jtango18

.github/workflows/test-values-migrations.yaml

@@ -18,7 +18,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v6
         with:
-          go-version: '1.23.1'
+          go-version: '1.25.5'
           cache-dependency-path: "**/go.sum"
 
       - name: Test