upgrade quimb and cotengra versions (#1420)

**Context:**

This demo was getting random warnings,
```
/home/runner/work/qml/qml/venv/lib/python3.10/site-packages/cotengra/hyperoptimizers/hyper.py:57: UserWarning: Couldn't find `optuna`, `cmaes`, or `nevergrad` so will use completely random sampling in place of hyper-optimization.
  warnings.warn(
/home/runner/work/qml/qml/venv/lib/python3.10/site-packages/cotengra/hyperoptimizers/hyper.py:76: UserWarning: Couldn't find `optuna`, `cmaes`, or `nevergrad` so will use completely random sampling in place of hyper-optimization.
  warnings.warn(
```
which seemed to only occur with `cotengra <= 0.7.4`.


![image](https://github.com/user-attachments/assets/2ed9409a-1e9b-4662-a1da-296bd8ce303a)



**Description of the change:**

By upgrading `cotengra` (and `quimb` ... why not?), the warnings
disappear.

**Benefits:**

No more warnings,


![image](https://github.com/user-attachments/assets/317699c6-d0f5-48ce-96ee-71041f87f1ce)

Author: andrijapau

demonstrations/tutorial_How_to_simulate_quantum_circuits_with_tensor_networks.metadata.json

@@ -6,7 +6,7 @@
         }
     ],
     "dateOfPublication": "2024-07-09T00:00:00+00:00",
-    "dateOfLastModification": "2024-10-07T00:00:00+00:00",
+    "dateOfLastModification": "2025-06-25T00:00:00+00:00",
     "categories": [
         "Getting Started",
         "Quantum Computing",

poetry.lock

@@ -96,7 +96,8 @@ zstd = "*"
 dill = "*"
 stim = "*"
 bluequbit = "0.9.3b1"
-quimb = "1.8.2"
+quimb = "1.11.0"
+cotengra = "0.7.5"
 aiohttp = "3.9.5"
 fsspec = "2024.6.1"
 h5py = "3.11.0"