v0.8.0

Release post: https://mau.fi/blog/2025-09-mautrix-release/

• Added PDU validation to policy server.
• Added note for policy list change notices that were delayed.
• Added command flag to kick user in a specific room only (thanks to @nexy7574 in #39).
• Added option to not require encryption in management room even if encryption is set up in config.
• Fixed policy server redacting events multiple times.
• Fixed spoilers in bot notices not being applied properly in some cases.
• Fixed policy list cache not handling removals of duplicate policies correctly.