looking at the license file, one is listed as cc by sa 4.0, which means you need to bump your license up to that here on cdb. additionally, default_punch has no license
You can just copy the lines for tnt_smoke.png in the TNT mod's readme file into your license file instead, which will preserve the original author for attribution.
looking at the license file, one is listed as cc by sa 4.0, which means you need to bump your license up to that here on cdb. additionally, default_punch has no license
additionally, the license says textures are cc0 by you, however it appears some are not in that case, for example, the tnt_smoke.png texture: https://github.com/minetest/minetest_game/blob/master/mods/tnt/README.txt#L17-L18
replaced sound with cc0 version
tnt_smoke.png license issue was not addressed
You can just copy the lines for
tnt_smoke.pngin the TNT mod's readme file into your license file instead, which will preserve the original author for attribution.