chore: update Minecraft versions (#584)

Co-authored-by: moddermore-bot[bot] <207009453+moddermore-bot[bot]@users.noreply.github.com>

Author: moddermore-bot[bot]

src/lib/minecraftVersions.json

@@ -100,6 +100,7 @@
     "1.0"
   ],
   "snapshots": [
+    "26.1-snapshot-6",
     "26.1-snapshot-5",
     "26.1-snapshot-4",
     "26.1-snapshot-3",