fix: enable follow_redirects for httpx client to handle 307 status codes (#164)

- Added follow_redirects=True to httpx.AsyncClient configuration
- This resolves issues with 307 Temporary Redirect responses
- Ensures proper handling of redirect responses from Flagsmith API
- All existing tests continue to pass

Author: GuyGitzMagen

src/edge_proxy/server.py

@@ -21,7 +21,10 @@
 setup_logging(settings.logging)
 environment_service = EnvironmentService(
     LocalMemEnvironmentsCache(),
-    httpx.AsyncClient(timeout=settings.api_poll_timeout_seconds),
+    httpx.AsyncClient(
+        timeout=settings.api_poll_timeout_seconds,
+        follow_redirects=True,
+    ),
     settings,
 )