… for deserializing json subfields from bigquery, this adds support for that.

Thank you for opening a Pull Request! Before submitting your PR, there are a few things you can do to make sure it goes smoothly:
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Fixes #[1500](https://togithub.com/googleapis/python-bigquery/issues/1500) 🦕

* chore: use freezegun to mock time in retry tests

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

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* ci: update required checks

* (test) remove retry from datetime_helpers path

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Co-authored-by: Lingqing Gan <[email protected]>

* fix: load_table_from_dataframe for higher scale decimal

* Update test_client.py

* fix test_load_table_from_dataframe_w_higher_scale_decimal128_datatype

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Co-authored-by: Lingqing Gan <[email protected]>

…ter (#1757)

Co-authored-by: Kira <[email protected]>

…rovided (#1747)

Thank you for opening a Pull Request! Before submitting your PR, there are a few things you can do to make sure it goes smoothly:
- [ ] Make sure to open an issue as a [bug/issue](https://togithub.com/googleapis/python-bigquery/issues/new/choose) before writing your code!  That way we can discuss the change, evaluate designs, and agree on the general idea
- [ ] Ensure the tests and linter pass
- [ ] Code coverage does not decrease (if any source code was changed)
- [ ] Appropriate docs were updated (if necessary)

Fixes #1745  🦕

Move instructions off deprecated module.

Co-authored-by: Chalmer Lowe <[email protected]>

* Due to upstream change in dataset, updates expected results

* 🦉 Updates from OwlBot post-processor

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* feat: support RANGE in schema

* lint

* fix python 3.7 error

* remove unused test method

* address comments

* add system test

* correct range json schema

* json format

* change system test to adjust to upstream table

* fix systest

* remove insert row with range

* systest

* add unit test

* fix mypy error

* error

* address comments

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