hack/tools: pin gengo/v2 to older & compatible version

See kubernetes/gengo#286
for context & details.

hack/tools/go.mod

@@ -144,3 +144,7 @@ require (
 )
 
 replace sigs.k8s.io/cluster-api-provider-openstack => ../..
+
+// Remove it once we have a new version of code-generator that is compatible with latest gengo.
+// See https://github.com/kubernetes/gengo/issues/286
+replace k8s.io/gengo/v2 => k8s.io/gengo/v2 v2.0.0-20240228010128-51d4e06bde70

hack/tools/go.sum

@@ -451,8 +451,8 @@ k8s.io/component-base v0.31.5 h1:kpFiy1hI7F4Owp+o59H2CVLzmN94qwcPz+2L6wRhkqM=
 k8s.io/component-base v0.31.5/go.mod h1:OiiusrmcLz42i9VvcAd94yQIN7UzQHJxN/hXxwYzj6E=
 k8s.io/gengo v0.0.0-20201203183100-97869a43a9d9 h1:1bLA4Agvs1DILmc+q2Bbcqjx6jOHO7YEFA+G+0aTZoc=
 k8s.io/gengo v0.0.0-20201203183100-97869a43a9d9/go.mod h1:FiNAH4ZV3gBg2Kwh89tzAEV2be7d5xI0vBa/VySYy3E=
-k8s.io/gengo/v2 v2.0.0-20240826214909-a7b603a56eb7 h1:cErOOTkQ3JW19o4lo91fFurouhP8NcoBvb7CkvhZZpk=
-k8s.io/gengo/v2 v2.0.0-20240826214909-a7b603a56eb7/go.mod h1:EJykeLsmFC60UQbYJezXkEsG2FLrt0GPNkU5iK5GWxU=
+k8s.io/gengo/v2 v2.0.0-20240228010128-51d4e06bde70 h1:NGrVE502P0s0/1hudf8zjgwki1X/TByhmAoILTarmzo=
+k8s.io/gengo/v2 v2.0.0-20240228010128-51d4e06bde70/go.mod h1:VH3AT8AaQOqiGjMF9p0/IM1Dj+82ZwjfxUP1IxaHE+8=
 k8s.io/klog v0.2.0 h1:0ElL0OHzF3N+OhoJTL0uca20SxtYt4X4+bzHeqrB83c=
 k8s.io/klog v0.2.0/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=
 k8s.io/klog/v2 v2.2.0/go.mod h1:Od+F08eJP+W3HUb4pSrPpgp9DGU4GzlpG/TmITuYh/Y=