chore: regenerate samples (#190)

* chore(bazel): update protobuf to v3.21.7

PiperOrigin-RevId: 477955264

Source-Link: googleapis/googleapis@a724450

Source-Link: googleapis/googleapis-gen@4abcbca
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiNGFiY2JjYWVjODU1ZTc0YTBiMjJhNDk4OGNmOWUwZWI2MWE4MzA5NCJ9

* 🦉 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>

packages/google-cloud-data-qna/samples/generated_samples/snippet_metadata_dataqna_v1alpha.json

@@ -125,7 +125,7 @@
         "shortName": "suggest_queries"
       },
       "description": "Sample for SuggestQueries",
-      "file": "dataqna_v1alpha_generated_auto_suggestion_service_suggest_queries_sync_d283907c.py",
+      "file": "dataqna_v1alpha_generated_auto_suggestion_service_suggest_queries_sync_f773b5fc.py",
       "language": "PYTHON",
       "origin": "API_DEFINITION",
       "regionTag": "dataqna_v1alpha_generated_AutoSuggestionService_SuggestQueries_sync",
@@ -161,7 +161,7 @@
           "type": "RESPONSE_HANDLING"
         }
       ],
-      "title": "dataqna_v1alpha_generated_auto_suggestion_service_suggest_queries_sync_d283907c.py"
+      "title": "dataqna_v1alpha_generated_auto_suggestion_service_suggest_queries_sync_f773b5fc.py"
     },
     {
       "canonical": true,
@@ -201,7 +201,7 @@
         "shortName": "suggest_queries"
       },
       "description": "Sample for SuggestQueries",
-      "file": "dataqna_v1alpha_generated_auto_suggestion_service_suggest_queries_sync_f773b5fc.py",
+      "file": "dataqna_v1alpha_generated_auto_suggestion_service_suggest_queries_sync_d283907c.py",
       "language": "PYTHON",
       "origin": "API_DEFINITION",
       "regionTag": "dataqna_v1alpha_generated_AutoSuggestionService_SuggestQueries_sync",
@@ -237,7 +237,7 @@
           "type": "RESPONSE_HANDLING"
         }
       ],
-      "title": "dataqna_v1alpha_generated_auto_suggestion_service_suggest_queries_sync_f773b5fc.py"
+      "title": "dataqna_v1alpha_generated_auto_suggestion_service_suggest_queries_sync_d283907c.py"
     },
     {
       "canonical": true,