Upgrade Fedify packages to 2.1.0

Update the Fedify package set to 2.1.0 across the application and
refresh the lockfile accordingly.

This keeps the dependency upgrade isolated from the inbox behavior
change that will follow in a separate commit.

Author: dahlia

package.json

@@ -21,13 +21,13 @@
   },
   "dependencies": {
     "@aws-sdk/credential-providers": "^3.1009.0",
-    "@fedify/debugger": "^2.0.7",
-    "@fedify/fedify": "^2.0.7",
-    "@fedify/hono": "^2.0.7",
+    "@fedify/debugger": "^2.1.0",
+    "@fedify/fedify": "^2.1.0",
+    "@fedify/hono": "^2.1.0",
     "@fedify/markdown-it-hashtag": "~0.3.0",
     "@fedify/markdown-it-mention": "~0.3.0",
-    "@fedify/postgres": "^2.0.7",
-    "@fedify/vocab": "^2.0.7",
+    "@fedify/postgres": "^2.1.0",
+    "@fedify/vocab": "^2.1.0",
     "@hexagon/base64": "^2.0.4",
     "@hono/node-server": "^1.19.11",
     "@hono/zod-validator": "^0.7.6",