CDRIVER-4408 require 4.2.0 server for csfle tests (#1040)
CDRIVER-4408 require 4.2.0 server for csfle tests (#1040)

* Require 4.2.0 server for csfle tests

* Update src/libmongoc/tests/unified/runner.c

Co-authored-by: Ezra Chung <ac2244fb8f9d14c584c89a2e3d2f6d4dc35bcd28@users.noreply.github.com>

Co-authored-by: Ezra Chung <ac2244fb8f9d14c584c89a2e3d2f6d4dc35bcd28@users.noreply.github.com>
mongodb/mongo-c-driver,rcsanchez97/mongo-c-driver,rcsanchez97/mongo-c-driver,rcsanchez97/mongo-c-driver,jmikola/mongo-c-driver,jmikola/mongo-c-driver,mongodb/mongo-c-driver,rcsanchez97/mongo-c-driver,rcsanchez97/mongo-c-driver,mongodb/mongo-c-driver,jmikola/mongo-c-driver,mongodb/mongo-c-driver,mongodb/mongo-c-driver,jmikola/mongo-c-driver,jmikola/mongo-c-driver,mongodb/mongo-c-driver,mongodb/mongo-c-driver,jmikola/mongo-c-driver,rcsanchez97/mongo-c-driver,rcsanchez97/mongo-c-driver,jmikola/mongo-c-driver