https://github.com/mongodb/mongo-c-driver/compare/r1.14...master
PHPC-1364 Upgrade libmongoc to 1.14.0
PHPC-1313 Add support for Zstandard compression
PHPC-1412 Fix test failures when retryable writes are enabled
PHPC-1413 Fix test failures executing insert on secondary
PHPC-1415 Fix test failures for sharded cluster without replica set