Znuny 7.0.6

• 2023-06-07 Fixed ticket priority and state color. #443
• 2023-05-31 Added removal of protocol-relative URLs to Kernel::System::HTMLUtils::Safety. Thanks to Tim Püttmanns (@tipue-dev), maxence, for reporting the issue.
• 2023-05-31 Added security relevant check for content type of article and attachments to generic interface operations TicketCreate and TicketUpdate. Thanks to Tim Püttmanns (@tipue-dev), maxence, for reporting the issue.
• 2023-05-31 Process management: Added missing scope filter for transition actions.
• 2023-05-30 Updated CPAN library Sisimai to version 4.25.16. #391
• 2023-05-25 Changed article action 'note to linked ticket' to only be visible/usable in agent ticket zoom.
• 2023-05-23 Fixed event handling for DBCRUD history entries.