feat: send telemetry heartbeat post migrations are applied (#3351)

api/telemetry/apps.py

@@ -2,21 +2,27 @@
 
 from django.apps import AppConfig
 from django.conf import settings
+from django.db.models.signals import post_migrate
 
 logger = logging.getLogger(__name__)
 
 
+def send_telemetry_callback(sender, **kwargs):
+    if settings.ENABLE_TELEMETRY:
+        try:
+            from .telemetry import SelfHostedTelemetryWrapper
+
+            telemetry = SelfHostedTelemetryWrapper()
+            telemetry.send_heartbeat()
+        except Exception as e:
+            logger.debug(
+                "Failed to send Telemetry data to Flagsmith. Exception was %s" % e
+            )
+    pass
+
+
 class TelemetryConfig(AppConfig):
     name = "telemetry"
 
     def ready(self):
-        if settings.ENABLE_TELEMETRY:
-            try:
-                from .telemetry import SelfHostedTelemetryWrapper
-
-                telemetry = SelfHostedTelemetryWrapper()
-                telemetry.send_heartbeat()
-            except Exception as e:
-                logger.debug(
-                    "Failed to send Telemetry data to Flagsmith. Exception was %s" % e
-                )
+        post_migrate.connect(send_telemetry_callback, sender=self)