Multiple changes:

- deb: can use ppa as dependency
- deb: cross and regular are using parallel nocheck builds
- deb: ephemeral will not pull keyring if no root powers

src/package_info.rs

@@ -15,7 +15,7 @@ use log::{debug, warn};
 /// # Returns
 /// * The base URL for the PPA (e.g., "https://ppa.launchpadcontent.net/user/ppa_name/ubuntu/")
 pub fn ppa_to_base_url(user: &str, name: &str) -> String {
-    format!("https://ppa.launchpadcontent.net/{}/{}/ubuntu", user, name)
+    format!("http://ppa.launchpadcontent.net/{}/{}/ubuntu", user, name)
 }
 
 async fn check_launchpad_repo(package: &str) -> Result<Option<String>, Box<dyn Error>> {