fix(alloy): mount /run/udev for diskstats device properties

node-exporter's diskstats collector reads udev device properties from
/run/udev/data; without the mount it logs an error and drops those labels.

alloy/compose.yml

@@ -29,6 +29,7 @@ services:
       - /sys:/sys:ro
       - /:/rootfs:ro
       - /dev/disk/:/dev/disk:ro
+      - /run/udev:/run/udev:ro
       - /var/lib/docker/:/var/lib/docker:ro
       - /var/log:/var/log:ro
       - /etc/machine-id:/etc/machine-id:ro