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/counter.go

@@ -0,0 +1,9 @@
+package internal
+
+func MakeIncrementingIndexCounter() func() (int, error) {
+	idx := -1
+	return func() (int, error) {
+		idx += 1
+		return idx, nil
+	}
+}