chore(qa): format code and configure clippy lints

tests/upgrade_security_test.rs

@@ -98,10 +98,7 @@ trusted comment: timestamp:1789750897\tfile:test_payload.txt\thashed\n\
     assert!(sig_line.starts_with("RU"));
     sig_line.replace_range(0..2, "RW");
 
-    let legacy_sig_text = format!(
-        "{}\n{}\n{}\n{}\n",
-        lines[0], sig_line, lines[2], lines[3]
-    );
+    let legacy_sig_text = format!("{}\n{}\n{}\n{}\n", lines[0], sig_line, lines[2], lines[3]);
 
     let res = verify_minisign_signature(payload, &legacy_sig_text, SANCTUM_RELEASE_PUBKEY);
     assert!(
@@ -194,5 +191,3 @@ zjZAS4uy1PH+0S9KQ0EU435lpBczU3lULyS5SkWf093iCEBc1ULiscwE5gWkEkex3ecPdRugopT+fKaZ
         "Weder Primär- noch Backup-Schlüssel dürfen manipulierte Nutzdaten akzeptieren"
     );
 }
-
-