Add upgrade message for new version.

src/_nebari/upgrade.py

@@ -705,6 +705,20 @@ def _version_specific_upgrade(
         return config
 
 
+class Upgrade_2024_2_1(UpgradeStep):
+    version = "2024.2.1"
+
+    def _version_specific_upgrade(
+        self, config, start_version, config_filename: Path, *args, **kwargs
+    ):
+        rich.print("\n ⚠️  Warning ⚠️")
+        rich.print(
+            "-> Please run the [green]rm -rf stages[/green] so that we can regenerate an updated set of Terraform scripts for your deployment."
+        )
+
+        return config
+
+
 __rounded_version__ = str(rounded_ver_parse(__version__))
 
 # Manually-added upgrade steps must go above this line