Update dependencies and improve Python path handling

Updated several frontend dependencies including MUI packages and added new ones like `@mui/x-charts`. Adjusted the Python path setup in the CI configuration to correctly point to the `aaredb` backend, ensuring accurate module resolution.

backend/tests/test_auth.py

@@ -11,7 +11,7 @@ def client():
         yield test_client
 
 
-def test_login_success():
+def test_login_success(client):
     response = client.post(
         "/auth/token/login", data={"username": "testuser", "password": "testpass"}
     )
@@ -19,7 +19,7 @@ def test_login_success():
     assert "access_token" in response.json()
 
 
-def test_login_failure():
+def test_login_failure(client):
     response = client.post(
         "/auth/token/login", data={"username": "wrong", "password": "wrongpass"}
     )
@@ -27,7 +27,7 @@ def test_login_failure():
     assert response.json() == {"detail": "Incorrect username or password"}
 
 
-def test_protected_route():
+def test_protected_route(client):
     # Step 1: Login
     response = client.post(
         "/auth/token/login", data={"username": "testuser", "password": "testpass"}