editors/emacs-devel: Update to 2026-05-17 snapshot

Highlights:

• Emacs master version bumped to 32.0.50.
• ERC 5.6.2 released (6d347d98348), then bumped to ERC 5.7-git.
• Transient updated to v0.13.3 (f833e560c15).
• gnus-dbus.el marked obsolete and moved to obsolete/ (9bf2a19bb21, d54faa0f1bf).

Commit log: https://github.com/emacs-mirror/emacs/compare/e575817e8fe...f599a922770
Sponsored by: The FreeBSD Foundation