fix: update BigQuerySchemaUtil to use non-deprecated hasExtension (#2732)

This is to unblock protocol buffer version updates.

Author: PhongChuong

google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/BigQuerySchemaUtil.java

@@ -15,7 +15,9 @@
  */
 package com.google.cloud.bigquery.storage.v1;
 
+import com.google.protobuf.DescriptorProtos.FieldOptions;
 import com.google.protobuf.Descriptors.FieldDescriptor;
+import com.google.protobuf.ExtensionLite;
 import java.nio.charset.StandardCharsets;
 import java.util.Base64;
 
@@ -74,8 +76,12 @@ public static String generatePlaceholderFieldName(String fieldName) {
  * @return columnName annotation if present, otherwise return the field name.
  */
  public static String getFieldName(FieldDescriptor fieldDescriptor) {
- return fieldDescriptor.getOptions().hasExtension(AnnotationsProto.columnName)
- ? fieldDescriptor.getOptions().getExtension(AnnotationsProto.columnName)
+ return fieldDescriptor
+ .getOptions()
+ .hasExtension((ExtensionLite<FieldOptions, String>) AnnotationsProto.columnName)
+ ? fieldDescriptor
+ .getOptions()
+ .getExtension((ExtensionLite<FieldOptions, String>) AnnotationsProto.columnName)
  : fieldDescriptor.getName();
  }
 }