Try to ignore migration errors (#430)

src/app.py

@@ -20,6 +20,7 @@
 import tempfile
 import zipfile
 import jwt
+import logging
 import base64
 from cryptography.hazmat.primitives import serialization
 
@@ -49,7 +50,10 @@
 
 @asynccontextmanager
 async def lifespan(app: FastAPI):
-    db.alembic_upgrade()
+    try:
+        db.alembic_upgrade()
+    except Exception:
+        logging.exception("Failed to apply migrations. Trying to continue...")
     yield