update libmongocrypt version (#2240)

Author: jordan-smith721

snooty.toml

@@ -272,7 +272,7 @@ kmip-kms-no-hover = "KMIP-compliant key provider"
 kmip-kms = "{+kmip-hover+}-compliant key provider"
 kmip-kms-title = "KMIP-Compliant Key Provider"
 csfle-code-snippets-gen-keys = "https://github.com/mongodb/docs/tree/master/source/includes/quick-start/generate-master-key"
-libmongocrypt-version = "1.5"
+libmongocrypt-version = "1.6"
 mongodb-crypt-version = "1.6.1"
 sample-app-url-csfle = "https://github.com/mongodb-university/docs-in-use-encryption-examples/tree/main/csfle"
 sample-app-url-qe = "https://github.com/mongodb-university/docs-in-use-encryption-examples/tree/main/queryable-encryption"