chore: Update gapic-generator-python to v1.8.5 (#727)

* 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>

Author: gcf-owl-bot[bot]

google/cloud/logging_v2/types/log_entry.py

@@ -13,6 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+from __future__ import annotations
+
 from typing import MutableMapping, MutableSequence
 
 import proto  # type: ignore

google/cloud/logging_v2/types/logging.py

@@ -13,6 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+from __future__ import annotations
+
 from typing import MutableMapping, MutableSequence
 
 import proto  # type: ignore

google/cloud/logging_v2/types/logging_config.py

@@ -13,6 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+from __future__ import annotations
+
 from typing import MutableMapping, MutableSequence
 
 import proto  # type: ignore

google/cloud/logging_v2/types/logging_metrics.py

@@ -13,6 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+from __future__ import annotations
+
 from typing import MutableMapping, MutableSequence
 
 import proto  # type: ignore

samples/generated_samples/snippet_metadata_google.logging.v2.json

@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-logging",
-    "version": "3.5.0"
+    "version": "0.1.0"
   },
   "snippets": [
     {