Used Image instead of URL for Actors icon

ref https://mitra.social/post/01908de4-a9e1-41ef-eaef-b30f3170e75b

Fedify expects an `icon` to be an instance of `Image`

src/dispatchers.ts

@@ -2,6 +2,7 @@ import {
     Article,
     Accept,
     Follow,
+    Image,
     Person,
     RequestContext,
     lookupObject,
@@ -37,7 +38,7 @@ async function getUserData(ctx: RequestContext<ContextData>, handle: string) {
             name: existing.name,
             summary: existing.summary,
             preferredUsername: existing.preferredUsername,
-            icon: new URL(existing.icon),
+            icon: new Image({ url: new URL(existing.icon) }),
             inbox: new URL(existing.inbox),
             outbox: new URL(existing.outbox),
             following: new URL(existing.following),
@@ -53,7 +54,7 @@ async function getUserData(ctx: RequestContext<ContextData>, handle: string) {
         name: `Local Ghost site`,
         summary: 'This is a summary',
         preferredUsername: handle,
-        icon: new URL('https://ghost.org/favicon.ico'),
+        icon: new Image({ url: new URL('https://ghost.org/favicon.ico') }),
         inbox: ctx.getInboxUri(handle),
         outbox: ctx.getOutboxUri(handle),
         following: ctx.getFollowingUri(handle),
@@ -68,7 +69,7 @@ async function getUserData(ctx: RequestContext<ContextData>, handle: string) {
         name: data.name,
         summary: data.summary,
         preferredUsername: data.preferredUsername,
-        icon: data.icon.href,
+        icon: data.icon.url!.href as string,
         inbox: data.inbox.href,
         outbox: data.outbox.href,
         following: data.following.href,