Update dependency google-cloud-bigquery to v1.28.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
google-cloud-bigquery	==1.27.2 -> ==1.28.0

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Release Notes

googleapis/python-bigquery

v1.28.0

Compare Source

Features

• add custom cell magic parser to handle complex --params values (#​213) (dcfbac2)
• add instrumentation to list methods (#​239) (fa9f9ca)
• add opentelemetry tracing (#​215) (a04996c)
• expose require_partition_filter for hive_partition (#​257) (aa1613c)

Bug Fixes

• fix dependency issue in fastavro (#​241) (2874abf)
• update minimum dependency versions (#​263) (1be66ce)
• validate job_config.source_format in load_table_from_dataframe (#​262) (6160fee)

Documentation

• recommend insert_rows_json to avoid call to tables.get (#​258) (ae647eb)

1.27.2 (2020-08-18)

Bug Fixes

• rationalize platform constraints for 'pyarrow' extra (#​235) (c9a0567)

1.27.1 (2020-08-18)

Bug Fixes

• tweak pyarrow extra to soothe PyPI (#​230) (c15efbd)

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