chore(deps): Update dependency go to v1.22.6 (terraform-google-modules#2036)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

test/integration/go.mod

@@ -2,7 +2,7 @@ module github.com/terraform-google-modules/terraform-google-kubernetes-engine/te
 
 go 1.22
 
-toolchain go1.22.5
+toolchain go1.22.6
 
 require (
 	github.com/GoogleCloudPlatform/cloud-foundation-toolkit/infra/blueprint-test v0.16.1