mongodb: 2.1.8

2026-02-04T00:00:00+00:00

## What's Changed
* PHPC-2670: Upgrade libmongoc to 1.30.7 by @alcaeus in https://github.com/mongodb/mongo-php-driver/pull/1930
* PHPC-2636: Respect libbson nesting limit when parsing PHP objects by @alcaeus in https://github.com/mongodb/mongo-php-driver/pull/1934

**Full Changelog**: https://github.com/mongodb/mongo-php-driver/compare/2.1.7...2.1.8