chore(deps): update dependency go to v1.26.0

Author: renovate[bot]

examples/go.mod

@@ -2,7 +2,7 @@ module github.com/muhlba91/pulumi-proxmoxve/examples
 
 go 1.24.7
 
-toolchain go1.25.7
+toolchain go1.26.0
 
 replace github.com/hashicorp/terraform-plugin-sdk/v2 => github.com/pulumi/terraform-plugin-sdk/v2 v2.0.0-20250923233607-7f1981c8674a