chore(deps): bump gunicorn to 23.0.0 and configure safety policy for starlette

Author: ShadyNights

backend/.safety-policy.yml

@@ -0,0 +1,12 @@
+version: '2.0'
+security:
+  ignore-vulnerabilities:
+    78279:
+      reason: "Starlette cannot be upgraded until FastAPI releases support for >=1.0.1. Awaiting upstream fix."
+      expires: "2026-10-01"
+    80876:
+      reason: "Starlette cannot be upgraded until FastAPI releases support for >=1.0.1. Awaiting upstream fix."
+      expires: "2026-10-01"
+    99546:
+      reason: "Starlette cannot be upgraded until FastAPI releases support for >=1.0.1. Awaiting upstream fix."
+      expires: "2026-10-01"

backend/requirements.txt

@@ -6,7 +6,7 @@ pyjwt==2.12.0
 python-multipart==0.0.27
 pydantic==2.6.1
 aiosqlite==0.20.0
-gunicorn==22.0.0
+gunicorn==23.0.0
 psycopg2-binary==2.9.9
 redis==5.0.1
 pydantic-settings==2.1.0