Made github actions use go 1.18 (#12454)
Made github actions use go 1.18 (#12454)

* Made github actions use go 1.18

* Fetch go version from go.mod

* Switched to v3 of setup-go

* Checkout repo before trying to get go.mod from it
hashicorp/terraform-provider-google,hashicorp/terraform-provider-google,hashicorp/terraform-provider-google,hashicorp/terraform-provider-google