fix gangway revision (bsc#1173165)

gangway image version was increased to 5 at this commit

SUSE/caasp-container-images@0f9800c#diff-45f24944e51aad4524696dae7dc47b2e

in order to fix bsc#1173165

Note this should be also backported to maintenance-caaspv4

Signed-off-by: Jordi Massaguer Pla <jmassaguerpla@suse.de>

internal/pkg/skuba/kubernetes/versions.go

@@ -105,7 +105,7 @@ var (
 				Cilium:        &AddonVersion{"1.7.5", 4},
 				Kured:         &AddonVersion{"1.4.3", 6},
 				Dex:           &AddonVersion{"2.23.0", 7},
-				Gangway:       &AddonVersion{"3.1.0-rev4", 5},
+				Gangway:       &AddonVersion{"3.1.0-rev5", 5},
 				MetricsServer: &AddonVersion{"0.3.6", 0},
 				Kucero:        &AddonVersion{"1.1.1", 0},
 				PSP:           &AddonVersion{"", 2},