CI(sanity-check): fix npm installation via apt

It was giving 404 errors.

Author: knocte

.github/workflows/CI.yml

@@ -64,7 +64,10 @@ jobs:
         fetch-depth: 0
 
     - name: Install dependencies of commitlint
-      run: sudo apt install --yes npm
+      run: |
+        sudo apt update --yes
+        sudo apt install --yes npm
+
     - name: Pull our commitlint configuration
       run: |
         git clone https://github.com/nblockchain/conventions.git