Backup fails due to sidecar's temp space exhaustion

[MichaluxPL]

Due to the Barman problem described here: EnterpriseDB/barman#1076, backup fails when there is not enough temp space for a sidecar container.
Looks like a compatibility problem between Barman and Python 3.12.
Building sidecar container image with i.e. Python 3.10 fixes it.

[fcanovai]

In #275 the plugin uses Barman 3.13.3, which has fixed the original issue.