mongodb 1.20.1

## What's Changed
* PHPC-2457: Fix using array items by reference by @alcaeus in https://github.com/mongodb/mongo-php-driver/pull/1697
* Use RHEL 8 to test old server versions by @alcaeus in https://github.com/mongodb/mongo-php-driver/pull/1700
* PHPC-2350: Test that PackedArray::fromJSON() accepts objects with valid keys by @jmikola in https://github.com/mongodb/mongo-php-driver/pull/1703
* PHPC-2433: Test PHP 8.4 on Evergreen by @alcaeus in https://github.com/mongodb/mongo-php-driver/pull/1721
* Include the compiler variant in Windows release file names for PHP 8.3 by @jmikola in https://github.com/mongodb/mongo-php-driver/pull/1718
* Update to latest setup-php-sdk version by @alcaeus in https://github.com/mongodb/mongo-php-driver/pull/1726
* Skip building against libmongoc master by @alcaeus in https://github.com/mongodb/mongo-php-driver/pull/1728
* PHPC-2468: Update to libmongoc 1.28.1 by @alcaeus in https://github.com/mongodb/mongo-php-driver/pull/1725
* PHPC-2649: Use output from setup-php-sdk in packaging step by @alcaeus in https://github.com/mongodb/mongo-php-driver/pull/1732
* Enable PHP 8.4 testing on PPC and Zseries by @alcaeus in https://github.com/mongodb/mongo-php-driver/pull/1737
* Use correct name for PDB file for pie installs. by @mickverm in https://github.com/mongodb/mongo-php-driver/pull/1745
* Remove prefix ext- from extension name. by @macintoshplus in https://github.com/mongodb/mongo-php-driver/pull/1752
* Configure release notes to exclude merge-up bot by @alcaeus in https://github.com/mongodb/mongo-php-driver/pull/1757

## New Contributors
* @mickverm made their first contribution in https://github.com/mongodb/mongo-php-driver/pull/1745
* @macintoshplus made their first contribution in https://github.com/mongodb/mongo-php-driver/pull/1752

**Full Changelog**: https://github.com/mongodb/mongo-php-driver/compare/1.20.0...1.20.1