chore: enable piuparts as well

.github/workflows/pkgbuilder-deps.yml

@@ -21,7 +21,7 @@ jobs:
       run: |
         sudo apt-get update
         # Note this is an older version of sbuild, no need to patch it, yet
-        sudo apt install -y debhelper schroot ubuntu-dev-tools
+        sudo apt install -y debhelper schroot ubuntu-dev-tools piuparts
         sudo apt-get -y install pkg-config libssl-dev uidmap
         sudo apt-get install -y libfilesys-df-perl libmime-lite-perl
         wget -q https://github.com/eth-pkg/sbuild-ubuntu/releases/download/0.85-6/sbuild_0.85.6_all.deb