chore: bump go to 1.25.8

Signed-off-by: Stoyan Zhelyazkov <stoyan.zhelyazkov@broadcom.com>

Author: spacegospod

README.md

@@ -26,7 +26,7 @@ Learn more:
 
     For general information about Terraform, visit [HashiCorp Developer][terraform-install] and [the project][terraform-github] on GitHub.
 
-- [Go 1.24.12][golang-install]
+- [Go 1.25.8][golang-install]
 
     Required, if [building][provider-build] the provider.
 

go.mod

@@ -1,6 +1,6 @@
 module github.com/vmware/terraform-provider-vsphere
 
-go 1.24.13
+go 1.25.8
 
 require (
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc