Updates kfp version range to use latest versions.

Incompatibility issue with TF 2.6 was resolved at kfp 1.8.5[1].

[1] kubeflow/pipelines#6683

PiperOrigin-RevId: 423940549

RELEASE.md

@@ -21,6 +21,7 @@
 *   Depends on `absl-py>=0.9,<2.0.0`.
 *   Depends on
     `tensorflow>=1.15.5,!=2.0.*,!=2.1.*,!=2.2.*,!=2.3.*,!=2.4.*,!=2.5.*,!=2.6.*,<3`.
+*   Depends on `kfp>=1.8.5,<2'`.
 *   Pusher now copies the `saved_model.pb` file at last to prevent loading
     SavedModel on invalid (partially available) directory state.
 *   Always disable caching for exit handlers in Kubeflow V2 runner to

tfx/dependencies.py

@@ -123,10 +123,7 @@ def make_extra_packages_airflow():
 def make_extra_packages_kfp():
   """Prepare extra packages needed for Kubeflow Pipelines orchestrator."""
   return [
-      # kfp==1.7.2 uses undefined field when updating a pipeline; b/197906254.
-      # TODO(b/200220058): Unblock upper bound after the version issue of
-      # `typing-extensions` with TF 2.6 is resolved.
-      'kfp>=1.6.1,!=1.7.2,<1.8.2',
+      'kfp>=1.8.5,<2',
       'kfp-pipeline-spec>=0.1.10,<0.2',
   ]