fix: geo type accepted change from bytes to string (#523)

Author: yirutang

google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1alpha2/BQTableSchemaToProtoDescriptor.java

@@ -49,7 +49,7 @@ public class BQTableSchemaToProtoDescriptor {
               .put(Table.TableFieldSchema.Type.DATE, FieldDescriptorProto.Type.TYPE_INT32)
               .put(Table.TableFieldSchema.Type.DATETIME, FieldDescriptorProto.Type.TYPE_INT64)
               .put(Table.TableFieldSchema.Type.DOUBLE, FieldDescriptorProto.Type.TYPE_DOUBLE)
-              .put(Table.TableFieldSchema.Type.GEOGRAPHY, FieldDescriptorProto.Type.TYPE_BYTES)
+              .put(Table.TableFieldSchema.Type.GEOGRAPHY, FieldDescriptorProto.Type.TYPE_STRING)
               .put(Table.TableFieldSchema.Type.INT64, FieldDescriptorProto.Type.TYPE_INT64)
               .put(Table.TableFieldSchema.Type.NUMERIC, FieldDescriptorProto.Type.TYPE_BYTES)
               .put(Table.TableFieldSchema.Type.STRING, FieldDescriptorProto.Type.TYPE_STRING)

google-cloud-bigquerystorage/src/test/java/com/google/cloud/bigquery/storage/v1alpha2/BQTableSchemaToProtoDescriptorTest.java

@@ -41,7 +41,7 @@ public class BQTableSchemaToProtoDescriptorTest {
               .put(Table.TableFieldSchema.Type.DATE, Int32Type.getDescriptor())
               .put(Table.TableFieldSchema.Type.DATETIME, Int64Type.getDescriptor())
               .put(Table.TableFieldSchema.Type.DOUBLE, DoubleType.getDescriptor())
-              .put(Table.TableFieldSchema.Type.GEOGRAPHY, BytesType.getDescriptor())
+              .put(Table.TableFieldSchema.Type.GEOGRAPHY, StringType.getDescriptor())
               .put(Table.TableFieldSchema.Type.INT64, Int64Type.getDescriptor())
               .put(Table.TableFieldSchema.Type.NUMERIC, BytesType.getDescriptor())
               .put(Table.TableFieldSchema.Type.STRING, StringType.getDescriptor())