Proposal #91: Temporarily update BLS signing parameters

Set max signing attempts to 1 and signing deadline blocks to 60 epoch lengths (923460 blocks) to mitigate a theoretical risk identified in a security report. Historically, retries have never been needed on mainnet, so this temporary change is not expected to affect normal operation.

• Status: Passed (submitted 2026-07-23)
• Tally by voting weight: yes 100.0%, no 0.0%, abstain 0.0%, no with veto 0.0%
• Proposer: gonka1y2a9p56kv044327uycmqdexl7zs82fs5ryv5le
• Messages: MsgUpdateParams