Fix package install in Github Actions

.github/workflows/build.yml

@@ -17,6 +17,7 @@ jobs:
         ruby-version: 2.6.3
     - name: Install dependencies
       run: |
+       sudo apt-get update
        sudo apt-get install libcurl4-openssl-dev
        bundle config set --local deployment 'true'
        bundle install --jobs=3 --retry=3