Use cache-cleanup command line option

The --mode command line option to has been renamed to --cache-cleanup

lib/codeql.js

@@ -570,7 +570,7 @@ async function getCodeQLForCmd(cmd, checkVersion) {
                 "database",
                 "cleanup",
                 databasePath,
-                `--mode=${cleanupLevel}`,
+                `--cache-cleanup=${cleanupLevel}`,
                 ...getExtraOptionsFromEnv(["database", "cleanup"]),
             ];
             await runTool(cmd, codeqlArgs);