Add a suppression for apple#993 until it can be fixed.

thomasvl · thomasvl · commit e6dbb681ae16 · 2020-05-14T10:43:01.000-04:00
diff --git a/Sources/Conformance/failure_list_swift.txt b/Sources/Conformance/failure_list_swift.txt
@@ -1 +1,2 @@
-# No known failures
+# Tracking in https://github.com/apple/swift-protobuf/issues/993
+Recommended.Proto2.JsonInput.FieldNameExtension.Validator

Original file line number	Diff line number	Diff line change
`@@ -1 +1,2 @@`
`1`		`-# No known failures`
	`1`	`+# Tracking in https://github.com/apple/swift-protobuf/issues/993`
	`2`	`+Recommended.Proto2.JsonInput.FieldNameExtension.Validator`