Bump encoding-down from 6.3.0 to 7.0.0

Bumps [encoding-down](https://github.com/Level/encoding-down) from 6.3.0 to 7.0.0.
- [Release notes](https://github.com/Level/encoding-down/releases)
- [Changelog](https://github.com/Level/encoding-down/blob/master/CHANGELOG.md)
- [Commits](Level/encoding-down@v6.3.0...v7.0.0)

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -22,7 +22,7 @@
   },
   "devDependencies": {
     "dependency-check": "^3.3.0",
-    "encoding-down": "^6.0.2",
+    "encoding-down": "^7.0.0",
     "hallmark": "^3.1.0",
     "level-community": "^3.0.0",
     "levelup": "^4.0.1",