fix: raise privileges of restart handler

[riptl]

The restart handler does not escalate privileges.

I'm seeing this failure on Ubuntu 20.04 LTS.

RUNNING HANDLER [promtail : Restart promtail] ***********************************************************
fatal: [loki-monolith-s-instance]: FAILED! => {"changed": false, "msg": "failure 1 during daemon-reload: Failed to reload daemon: Access denied\n"}

[patrickjahns]

Thanks - I'll merge it when CI gets green and create a release with the fix included 👍

[riptl]

@patrickjahns Thank you, deployed 1.3.1 and seeing no issues with Promtail 1.5.0!

[patrickjahns]

Great - will check the release notes and bump the default promtail version then as well