CI: Add Codecov token (#13999) Commit: https://github.com/vim/vim/commit/bd2f45a6e530df91ad07d49967ff148eb8a1c1e1 Author: K.Takata <kentkt@csc.jp> Date: Sat Feb 10 02:18:11 2024 +0900 CI: Add Codecov token (https://github.com/vim/vim/issues/13999) codecov-action@4 requires a token. Add it to the repository secrets. See: https://github.com/vim/vim/pull/13978#issuecomment-1935336624 Signed-off-by: Ken Takata <kentkt@csc.jp> Signed-off-by: Christian Brabandt <cb@256bit.org>