mongodb 2.1.0

MongoDB driver for PHP

The purpose of this driver is to provide exceptionally thin glue between MongoDB
and PHP, implementing only fundamental and performance-critical components
necessary to build a fully-functional MongoDB driver.

Download 2.1.0

License: Apache License

Changes

## What's Changed
* Mention `Serializable` and `Unserializable` types in upgrade guide by @GromNaN in https://github.com/mongodb/mongo-php-driver/pull/1805
* Add CODEOWNERS for 1.21+ by @alcaeus in https://github.com/mongodb/mongo-php-driver/pull/1810
* PHPC-2537 Update to newer Ubuntu version in GitHub Actions workflows by @GromNaN in https://github.com/mongodb/mongo-php-driver/pull/1814
* Feature: Client Bulk Write by @GromNaN in https://github.com/mongodb/mongo-php-driver/pull/1818
* PHPC-2580: Bump to libmongoc 1.30.4 by @alcaeus in https://github.com/mongodb/mongo-php-driver/pull/1822
* PHPC-2510 Install evergreen tools using git submodule by @GromNaN in https://github.com/mongodb/mongo-php-driver/pull/1797
* PHPC-2555: Stop testing with MongoDB 4.0 by @alcaeus in https://github.com/mongodb/mongo-php-driver/pull/1827
* PHPLIB-1678: Use assume_role command before accessing secrets by @alcaeus in https://github.com/mongodb/mongo-php-driver/pull/1832


**Full Changelog**: https://github.com/mongodb/mongo-php-driver/compare/2.0.0...2.1.0