fix: fix github ci failed.

Signed-off-by: Eglinux <mthreads0755@gmail.com>

.github/workflows/ci.yml

@@ -26,7 +26,7 @@ jobs:
           path: .cache
           restore-keys: |
             mkdocs-material-
-      - run: apt-get install pngquant 
+      - run: sudo apt update;sudo apt install pngquant 
       - run: pip install git+https://${GH_TOKEN}@github.com/eglinuxer/mkdocs-material-insiders.git
       - run: mkdocs gh-deploy --force
 env: