devel/interactive_rebase_tool: Update to version 1.0.0

From ChangeLog
(https://github.com/MitMaro/git-interactive-rebase-tool/releases/tag/1.0.0)

Added

• Support for unicode characters
• Horizontal and vertical overflow support

Changed

• Show git now uses libgit2 instead of external command

PR: 237304
Submitted by: petteri.valkonen@iki.fi (maintainer)