devel/electron26: update to 26.6.7

Changelog: https://github.com/electron/electron/releases/tag/v26.6.7

Reported by: GitHub (watch releases)
MFH: 2024Q1
Security: 2264566a-a890-46eb-a895-7881dd220bd0

(cherry picked from commit 04cbdf22eca997a1d1048e1eca2a212b34acc3d6)