Bump mods/hopper from `6ac1b61` to `c691f37`
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- Dependabot authored
Bumps [mods/hopper](https://github.com/minetest-mods/hopper) from `6ac1b61` to `c691f37`. - [Release notes](https://github.com/minetest-mods/hopper/releases) - [Commits](https://github.com/minetest-mods/hopper/compare/6ac1b6195136eb2ad6961c744f67e9775b7f0fd6...c691f370b4ff6054b76cc7e4c2ea623012e99238)