ACM-24350: Upgrade go to 1.24.6 for CVE-2025-47907 (#801)

Go 1.24.6 mitigates the postgres scan race condition.

Author: CrystalChun

go.mod

@@ -1,8 +1,6 @@
 module github.com/openshift/cluster-api-provider-agent
 
-go 1.24.0
-
-toolchain go1.24.2
+go 1.24.6
 
 // Versions to be held for v1beta1
 // sigs.k8s.io/controller-runtime on v0.11.x