Bump bundle/syntax-markdown from `5c21f16` to `9ff8d52`
Bump bundle/syntax-markdown from `5c21f16` to `9ff8d52`

Bumps [bundle/syntax-markdown](https://github.com/tpope/vim-markdown) from `5c21f16` to `9ff8d52`.
- [Release notes](https://github.com/tpope/vim-markdown/releases)
- [Commits](https://github.com/tpope/vim-markdown/compare/5c21f1677180b76310a05e5a9fce46de64c23041...9ff8d52c78fb8a587224d7f4d877fc95c8e1bd5b)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
drAlberT/vim-configuration,faktiva/vim-config