Update dependency sparkle-project/Sparkle to from: "2.6.0"

[renovate]

This PR contains the following updates:

Package	Update	Change
sparkle-project/Sparkle	minor	from: "2.5.2" -> from: "2.6.0"

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Release Notes

sparkle-project/Sparkle (sparkle-project/Sparkle)

v2.6.0

Compare Source

• Perform Gatekeeper scan to pre-warm app launch (#​2505) (Zorg)
• Disable sandboxing for the Downloader XPC service by default to fix downloader prompt warnings (#​2511) (Zorg)
• Store private seed as the secret for newly generated keys (#​2472) (Zorg)
• Improve signing error message to developers if they serve the wrong update file (#​2471) (Zorg)
• Prevent app modification warnings from external updaters (like sparkli-cli) by improving installation (#​2516) (Zorg)
• Update Korean localization (#​2504) (CheolHyun Mun)
• Use $PROJECT_DIR instead of $SRCROOT (#​2489) (Zorg)
• Set Package.swift minimum deployment to macOS 10.13 (#​2481) (Eitot)
• Fix false positive analyzer warning about resumableUpdate type (#​2454) (Zorg)

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