chore: fix kfp-kubernetes pipeline spec resolution errors (kubeflow#11868)

* use packaged pipeline spec in k8s platform pkg

kfp-kubernetes expects pipeline spec to be present in global namespace
this change updates generate proto code to replace this import to
correctly reference the spec in the kfp.pipeline_spec namespace.

Signed-off-by: Humair Khan <[email protected]>

* update to protoc 3.20

upgrading to 3.20 resolves issues where some of the proto python
generated code attempts to directly create descriptors. This issue is
encountered when trying to use kfp-kubernetes packages with kfp sdk,
forcing the user to downgrade protobuf to 3.20 or lower despite the
kfp sdk and kfp-kubernetes supporting >=4.0. This change resolves
this issue.

updating protoc also requires regeneration of all go and python proto code, as well us updates to the api generate and release images.

Signed-off-by: Humair Khan <[email protected]>

---------

Signed-off-by: Humair Khan <[email protected]>

Author: HumairAK

api/Makefile

@@ -13,7 +13,7 @@
 # limitations under the License.
 
 # Contact one of chensun, HumairAK, zijianjoy if this remote image needs an update.
-PREBUILT_REMOTE_IMAGE=ghcr.io/kubeflow/kfp-api-generator:1.0
+PREBUILT_REMOTE_IMAGE=ghcr.io/kubeflow/kfp-api-generator:1.1
 
 .PHONY: all
 all: golang python

api/v2alpha1/go/cachekey/cache_key.pb.go

@@ -18,7 +18,7 @@ ENV GRPC_GATEWAY_VERSION v1.9.6
 ENV GO_SWAGGER_VERSION v0.18.0
 ENV GOLANG_PROTOBUF_VERSION v1.5.1
 ENV GRPC_VERSION v1.23.0
-ENV PROTOC_VERSION 3.17.3
+ENV PROTOC_VERSION 3.20.3
 ENV GOBIN=/go/bin
 
 # Install protoc.

api/v2alpha1/go/pipelinespec/pipeline_spec.pb.go

@@ -21,7 +21,7 @@ REMOTE_IMAGE=ghcr.io/kubeflow/kfp-api-generator
 API_VERSION ?= v2beta1
 
 # Keep in sync with the version used in test/release/Dockerfile.release
-PREBUILT_REMOTE_IMAGE=ghcr.io/kubeflow/kfp-api-generator:1.0
+PREBUILT_REMOTE_IMAGE=ghcr.io/kubeflow/kfp-api-generator:1.1
 
 CONTAINER_ENGINE ?= docker