Fix the CPU data query to return a string (#6335)

Return a string here so we get cleaner output

Signed-off-by: Tim Smith <tsmith84@gmail.com>

Author: tas50

content/mondoo-linux-inventory.mql.yaml

@@ -112,9 +112,9 @@ packs:
         filters: mondoo.capabilities.contains("run-command")
         mql: |
           if (asset.arch == /aarch/) {
-            command("lscpu").stdout.lines.where(_.contains("Model name")).first().split(":").last().trim()
+            return command("lscpu").stdout.lines.where(_.contains("Model name")).first().split(":").last().trim()
           } else {
-            file("/proc/cpuinfo").content.lines.where(_.contains("model name")).first().split(":").last().trim()
+            return file("/proc/cpuinfo").content.lines.where(_.contains("model name")).first().split(":").last().trim()
           }
       - uid: mondoo-linux-root-volume
         title: Root volume size and filesystem type