Bump to v2.6.0 #116

Job	Run time
publish	39s
build-desktop (macos-latest, macos, arm64, Vibora-2.6.0-macos-arm64.dmg)	1m 21s
build-desktop (ubuntu-latest, linux, x64, Vibora-2.6.0-linux-x64.AppImage)	1m 10s
finalize-release	8s
	3m 18s

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