Avoid recompilation when building deb packages

Author: Alenar

.github/workflows/ci.yml

@@ -27,9 +27,9 @@ jobs:
       - name: Build Debian packages
         shell: bash
         run: |
-          cargo deb -p mithril-aggregator
-          cargo deb -p mithril-signer
-          cargo deb -p mithril-client
+          cargo deb --no-build -p mithril-aggregator
+          cargo deb --no-build -p mithril-signer
+          cargo deb --no-build -p mithril-client
       
       - name: Publish Debian packages
         uses: actions/upload-artifact@v3
@@ -45,7 +45,6 @@ jobs:
           path: target/release/mithril-end-to-end
           if-no-files-found: error
 
-  
   build:
     strategy:
       fail-fast: false