gomod/vendor: update system-validators to v1.4.0

Includes a Docker bump to 20.10.

vendor/k8s.io/system-validators/validators/docker_validator.go

@@ -49,7 +49,7 @@ func (d *DockerValidator) Name() string {
 
 const (
 	dockerConfigPrefix           = "DOCKER_"
-	latestValidatedDockerVersion = "19.03"
+	latestValidatedDockerVersion = "20.10"
 )
 
 // Validate is part of the system.Validator interface.

vendor/k8s.io/system-validators/validators/types_unix.go

@@ -70,7 +70,7 @@ var DefaultSysSpec = SysSpec{
 	CgroupsV2Optional: []string{"hugetlb"},
 	RuntimeSpec: RuntimeSpec{
 		DockerSpec: &DockerSpec{
-			Version:     []string{`1\.1[1-3]\..*`, `17\.0[3,6,9]\..*`, `18\.0[6,9]\..*`, `19\.03\..*`},
+			Version:     []string{`1\.1[1-3]\..*`, `17\.0[3,6,9]\..*`, `18\.0[6,9]\..*`, `19\.03\..*`, `20\.10\..*`},
 			GraphDriver: []string{"aufs", "overlay", "overlay2", "devicemapper", "zfs"},
 		},
 	},

vendor/k8s.io/system-validators/validators/types_windows.go

@@ -34,7 +34,7 @@ var DefaultSysSpec = SysSpec{
 	},
 	RuntimeSpec: RuntimeSpec{
 		DockerSpec: &DockerSpec{
-			Version:     []string{`18\.0[6,9]\..*`},
+			Version:     []string{`18\.0[6,9]\..*`, `19\.03\..*`},
 			GraphDriver: []string{"windowsfilter"},
 		},
 	},