add [lfx-mentorship-2026-June-August] Kthena LFX project declaration#1849

nate-double-u merged 3 commits into

cncf:maincncf/mentoring:mainfrom

LiZhenCheng9527:lfx-2026-second-kthenaLiZhenCheng9527/lfx-mentoring:lfx-2026-second-kthenaCopy head branch name to clipboard