update CI

Author: chaoming0625

.github/workflows/CI-models.yml

@@ -117,7 +117,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.9", "3.10", "3.11"]
 
     steps:
     - uses: actions/checkout@v2
@@ -128,8 +128,6 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install numpy>=1.21.0
-        python -m pip install "jaxlib==0.4.10" -f https://whls.blob.core.windows.net/unstable/index.html --use-deprecated legacy-resolver
-        python -m pip install jax==0.4.10
         python -m pip install -r requirements-dev.txt
         python -m pip install tqdm brainpylib
         pip uninstall brainpy -y