feat(cron): Warn on excessive memory consumption in background jobs

[nickvergessen]

• Resolves: #

Summary

TODO

• ...

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)

[ChristophWurst]

would be helpful if you could log the arguments too so we can pinpoint the job instance, e.g. for mail and the account synced in the job

maybe as logging context argument?