Potential fix for code scanning alert no. 5: Workflow does not contain permissions

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: IRus

.github/workflows/build.yml

@@ -1,4 +1,7 @@
 name: "Build Kotbusta Docker"
+permissions:
+  contents: read
+  packages: write
 
 on:
   - push