chore: Update package name for gapic generated executor code

PiperOrigin-RevId: 589051885

Author: Google APIs

google/spanner/executor/v1/BUILD.bazel

@@ -69,7 +69,7 @@ java_grpc_library(
 java_gapic_library(
     name = "executor_java_gapic",
     srcs = [":executor_proto_with_info"],
-    gapic_yaml = None,
+    gapic_yaml = "spanner_executor_gapic.yaml",
     grpc_service_config = "spanner_cloud_executor_grpc_service_config.json",
     service_yaml = "spanner_cloud_executor.yaml",
     test_deps = [
@@ -86,7 +86,7 @@ java_gapic_library(
 java_gapic_test(
     name = "executor_java_gapic_test_suite",
     test_classes = [
-        "com.google.spanner.executor.v1.SpannerExecutorProxyClientTest",
+        "com.google.cloud.spanner.executor.v1.SpannerExecutorProxyClientTest",
     ],
     runtime_deps = [":executor_java_gapic_test"],
 )

google/spanner/executor/v1/spanner_executor_gapic.yaml

@@ -0,0 +1,6 @@
+type: com.google.api.codegen.ConfigProto
+config_schema_version: 2.0.0
+language_settings:
+  java:
+    package_name: com.google.cloud.spanner.executor.v1
+    release_level: GA