chore: Update gapic-generator-python to v1.8.5 (#152)

* chore: Update gapic-generator-python to v1.8.5

PiperOrigin-RevId: 511892190

Source-Link: googleapis/googleapis@a45d9c0

Source-Link: googleapis/googleapis-gen@1907294
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiMTkwNzI5NGIxZDgzNjVlYTI0ZjhjNWYyZTA1OWE2NDEyNGM0ZWQzYiJ9

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: Anthonios Partheniou <partheniou@google.com>

packages/google-cloud-gke-connect-gateway/google/cloud/gkeconnect/gateway_v1beta1/types/gateway.py

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-
+import proto  # type: ignore
 
 __protobuf__ = proto.module(
     package="google.cloud.gkeconnect.gateway.v1beta1",