chore(main): release 3.33.0 (googleapis#935)

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chore(main): release 3.32.0 (googleapis#932)

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chore(main): release 3.31.0 (googleapis#923)

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chore(main): release 3.30.0 (googleapis#922)

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feat: Proto column feature tests and samples (googleapis#921)

* feat: add integration tests for Proto Columns

* feat: add unit tests for Proto Columns

* feat: update tests to add column_info argument at end

* feat: remove deepcopy during deserialization of proto message

* feat: tests refactoring

* feat: integration tests refactoring

* feat: samples and sample tests refactoring

* feat: lint tests folder

* feat:lint samples directory

* feat: stop running emulator with proto ddl commands

* feat: close the file after reading

* feat: update protobuf version lower bound to >3.20 to check proto message compatibility

* feat: update setup for snippets_tests.py file

* feat: add integration tests

* feat: remove duplicate integration tests

* feat: add proto_descriptor parameter to required tests

* feat: add compatibility tests between Proto message, Bytes and Proto Enum, Int64

* feat: add index tests for proto columns

* feat: replace duplicates with sample data

* feat: update protobuf lower bound version in setup.py file to add support for proto messages and enum

* feat: lint fixes

* feat: lint fix

* feat: tests refactoring

* feat: change comment from dml to dql for read

* feat: tests refactoring for update db operation

chore(main): release 3.29.0 (googleapis#907)

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chore(main): release 3.28.0 (googleapis#904)

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chore(main): release 3.27.1 (googleapis#884)

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chore(main): release 3.27.0 (googleapis#877)

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chore(main): release 3.26.0 (googleapis#870)

🤖 I have created a release *beep* *boop*
---


## [3.26.0](https://togithub.com/googleapis/python-spanner/compare/v3.25.0...v3.26.0) (2022-12-15)


### Features

* Inline Begin transction for RW transactions ([googleapis#840](https://togithub.com/googleapis/python-spanner/issues/840)) ([c2456be](https://togithub.com/googleapis/python-spanner/commit/c2456bed513dc4ab8954e5227605fca12e776b63))


### Bug Fixes

* Fix for binding of pinging and bursty pool with database role ([googleapis#871](https://togithub.com/googleapis/python-spanner/issues/871)) ([89da17e](https://togithub.com/googleapis/python-spanner/commit/89da17efccdf4f686f73f87f997128a96c614839))

---
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