x11/wezterm: Update to 20250730-110715 (continuous/nightly)

Also drop USE_GITLAB directive, which became unnecessary long ago.

Changes: https://github.com/wezterm/wezterm/compare/ee0c04e735fb94cb5119681f704fb7fa6731e713...6a493f88fab06a792308e0c704790390fd3c6232#diff-77f023b99d3d58008351d3e82fc06e6d06ba1bc2da9e41be6329b7fa4f419f05

PR: 289274
Reported by: Vladyslav Movchan <vladislav.movchan@gmail.com> (maintainer)