[CI] Fix broken model link (#14458)

The path to the `cnn_s_quantized.tflite` model used in some TVMC tests
was changed in ARM-software/ML-zoo#56. The link
has been updated with the new path.

I noticed the same model was used from a different link in the
codebase - using this link to avoid duplication and fix S3 error.

tests/python/driver/tvmc/conftest.py

@@ -242,7 +242,7 @@ def tflite_mobilenet_v1_0_25_128(tmpdir_factory):
 
 @pytest.fixture(scope="session")
 def tflite_cnn_s_quantized(tmpdir_factory):
-    base_url = "https://github.com/ARM-software/ML-zoo/raw/master/models/keyword_spotting/cnn_small/tflite_int8/"
+    base_url = "https://github.com/ARM-software/ML-zoo/raw/48a22ee22325d15d2371a6df24eb7d67e21dcc97/models/keyword_spotting/cnn_small/tflite_int8"
     file_to_download = "cnn_s_quantized.tflite"
     model_file = download_testdata(
         "{}/{}".format(base_url, file_to_download), file_to_download, module=["tvmc"]

tests/scripts/request_hook/request_hook.py

@@ -81,7 +81,6 @@
     "https://gist.githubusercontent.com/zhreshold/4d0b62f3d01426887599d4f7ede23ee5/raw/596b27d23537e5a1b5751d2b0481ef172f58b539/imagenet1000_clsid_to_human.txt": f"{BASE}/2022-10-05/imagenet1000_clsid_to_human.txt",
     "https://gist.githubusercontent.com/zhreshold/bcda4716699ac97ea44f791c24310193/raw/fa7ef0e9c9a5daea686d6473a62aacd1a5885849/cat.png": f"{BASE}/zhreshold/bcda4716699ac97ea44f791c24310193/raw/fa7ef0e9c9a5daea686d6473a62aacd1a5885849/cat.png",
     "https://github.com/ARM-software/ML-zoo/raw/48a22ee22325d15d2371a6df24eb7d67e21dcc97/models/keyword_spotting/cnn_small/tflite_int8/cnn_s_quantized.tflite": f"{BASE}/ARM-software/ML-zoo/raw/48a22ee22325d15d2371a6df24eb7d67e21dcc97/models/keyword_spotting/cnn_small/tflite_int8/cnn_s_quantized.tflite",
-    "https://github.com/ARM-software/ML-zoo/raw/master/models/keyword_spotting/cnn_small/tflite_int8//cnn_s_quantized.tflite": f"{BASE}/ARM-software/ML-zoo/raw/master/models/keyword_spotting/cnn_small/tflite_int8//cnn_s_quantized.tflite",
     "https://github.com/czh978/models_for_tvm_test/raw/main/tflite_graph_with_postprocess.pb": f"{BASE}/czh978/models_for_tvm_test/raw/main/tflite_graph_with_postprocess.pb",
     "https://github.com/dmlc/mxnet.js/blob/main/data/cat.png?raw=true": f"{BASE}/dmlc/mxnet.js/blob/main/data/cat.png"
     + quote("?raw=true"),