remove ubuntu rpm package

Author: Benjosh95

.github/workflows/release.yaml

@@ -114,7 +114,7 @@ jobs:
       - name: Install RPM tools
         run: |
           sudo apt-get update
-          sudo apt-get install -y createrepo-c rpm-sign
+          sudo apt-get install -y createrepo-c
 
       - name: Import GPG key
         uses: crazy-max/ghaction-import-gpg@v6