Add context timeouts for third-party requests

Avoid hanging a goroutine for a long time.

comms/text/twilio.go

@@ -3,6 +3,7 @@ package text
 import (
 	"context"
 	"fmt"
+	"time"
 
 	"github.com/Gleipnir-Technology/nidus-sync/config"
 	"github.com/rs/zerolog/log"
@@ -11,6 +12,9 @@ import (
 )
 
 func sendTextTwilio(ctx context.Context, source string, destination string, message string) (string, error) {
+	ctx, cancel := context.WithTimeout(ctx, 10*time.Second)
+	defer cancel()
+
 	client := twilio.NewRestClient()
 
 	params := &twilioApi.CreateMessageParams{}