chore(deps): update Deno dependencies to v6

Author: renovate[bot]

deno.json

@@ -18,7 +18,7 @@
     "@std/fmt": "jsr:@std/fmt@^1.0.8",
     "eta": "jsr:@bgub/eta@^4.5.0",
     "gunshi": "jsr:@gunshi/gunshi@^0.29.0",
-    "@shougo/dpp-vim": "jsr:@shougo/dpp-vim@~5.1.0",
+    "@shougo/dpp-vim": "jsr:@shougo/dpp-vim@~6.5.0",
     "@std/path": "jsr:@std/path@^1.0.0",
     "@std/toml": "jsr:@std/toml@^1.0.0",
     "@std/fs": "jsr:@std/fs@^1.0.0",