Updates to track upstream feedkit v0.8.2

internal/sources/nws/forecast_test.go

@@ -53,6 +53,11 @@ func TestForecastSourcesEmitExpectedSchemaAndPreferGeneratedAt(t *testing.T) {
 			if err != nil {
 				t.Fatalf("newSource() error = %v", err)
 			}
+			if ks, ok := src.(interface{ Kinds() []event.Kind }); !ok {
+				t.Fatalf("source does not implement Kinds()")
+			} else if gotKinds := ks.Kinds(); len(gotKinds) != 1 || gotKinds[0] != event.Kind("forecast") {
+				t.Fatalf("Kinds() = %#v, want [forecast]", gotKinds)
+			}
 
 			got, err := src.Poll(context.Background())
 			if err != nil {