chore: release v1.5.8

[sewandev]

Release v1.5.8

Version bump and changelog cut for the v1.5.8 release.

Changes

• \Cargo.toml\ / \Cargo.lock: version \1.5.7\ -> \1.5.8\
• \CHANGELOG.md\ / \CHANGELOG.es.md: moved [Unreleased]\ to [1.5.8] - 2026-09-07, added a fresh empty [Unreleased]\ / [Sin publicar]\

Included since v1.5.7

• fix: monotonic clock for stream stall detection (Use a monotonic clock for stream stall detection #268)
• fix: serialize Spotify remote skip commands (Serialize Spotify remote skip commands #267)
• fix: ensure required CI check reports lint failures (Ensure required CI check reports lint failures #266)
• ci: separate lint job and integrate swatinem/rust-cache (ci: separate lint job and integrate swatinem/rust-cache #250)
• docs: add winget as the easy Windows install method (docs: add winget as the easy Windows install method #249)
• build(deps): update Ratatui, Zip, Bytes, Clap, Rand, Thiserror and Actions