3.13.2

Rspamd 3.13.2

Feature update with enhanced security and performance improvements.

Main features:
* Separate encryption keys for fuzzy check read/write operations
* ED25519 support for DKIM signing and verification
* HashiCorp Vault KV v2 support for DKIM key management
* MetaDefender Cloud integration for anti-malware scanning
* LLM-based classification with user/domain context support
* DMARC RUA address exclusion configuration

Critical fixes:
* DKIM relaxed bodyhash calculation compliance with RFC 6376
* HTTP map interval enforcement and overflow prevention
* Once received plugin duplicate symbol fix
* Redis Sentinel options propagation
* Multiple fuzzy check decryption and key handling fixes

This release introduces significant security enhancements, modern cryptographic support, improved infrastructure integration, and enhanced anti-malware capabilities.
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