Update ginkgo to v2 in go.mod, go.sum, vendor

This commit updates ginkgo to v2.
Note that because ginkgo/v2 requires go1.18, it was
updated as well.

Signed-off-by: liornoy <lnoy@redhat.com>
Co-authored-by: Sascha Grunert <sgrunert@redhat.com>

vendor/github.com/onsi/ginkgo/v2/internal/global/init.go

@@ -0,0 +1,17 @@
+package global
+
+import (
+	"github.com/onsi/ginkgo/v2/internal"
+)
+
+var Suite *internal.Suite
+var Failer *internal.Failer
+
+func init() {
+	InitializeGlobals()
+}
+
+func InitializeGlobals() {
+	Failer = internal.NewFailer()
+	Suite = internal.NewSuite()
+}