ci: fix using apt for docker

Docker debian/ubuntu images are sudoless.

Follows #264

Author: DifferentialOrange

Diff for: .github/workflows/packing.yml

@@ -503,7 +503,7 @@ jobs:
       - name: Install the crud module for testing purposes
         run: |
           curl -L https://tarantool.io/release/2/installer.sh | bash
-          sudo apt install -y tt
+          apt install -y tt
           tt rocks install crud
 
       - name: Run tests