Fix ActivityPub test contacting dead server

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

test/fixtures/pleroma-comment-object.json

@@ -1,28 +1,23 @@
 {
   "@context": [
     "https://www.w3.org/ns/activitystreams",
-    "https://blob.cat/schemas/litepub-0.1.jsonld",
+    "https://soc.punktrash.club/schemas/litepub-0.1.jsonld",
     {
       "@language": "und"
     }
   ],
-  "actor": "https://blob.cat/users/comicbot",
-  "attachment": [
-    {
-      "mediaType": "image/gif",
-      "name": "1574936800141.gif",
-      "type": "Document",
-      "url": "https://blob.cat/media/143ba9b1ed15e67d7401906f7b71a459b90680af7075af5b8ac9cb8e3b86868a.gif"
-    }
-  ],
-  "attributedTo": "https://blob.cat/users/comicbot",
-  "cc": ["https://blob.cat/users/comicbot/followers"],
-  "content": "Super Mega Comics <br> <a href=\"http://supermegacomics.com/\" rel=\"ugc\">http://supermegacomics.com/</a>",
-  "context": "https://blob.cat/contexts/26f3271a-3eb8-4f3f-8fb1-8ff96e2c4a47",
-  "conversation": "https://blob.cat/contexts/26f3271a-3eb8-4f3f-8fb1-8ff96e2c4a47",
-  "id": "https://blob.cat/objects/02fdea3d-932c-4348-9ecb-3f9eb3fbdd94",
-  "published": "2019-11-28T10:26:42.503473Z",
+  "actor": "https://soc.punktrash.club/users/jorin",
+  "attachment": [],
+  "attributedTo": "https://soc.punktrash.club/users/jorin",
+  "cc": ["https://soc.punktrash.club/users/jorin/followers"],
+  "content": "I live in Spain<br><br>The S is silent<br><br>And it&#39;s French<br><br>🥖😎",
+  "context": "https://soc.punktrash.club/contexts/62eb8f27-c8ea-4cc3-818d-385ff96e4397",
+  "conversation": "https://soc.punktrash.club/contexts/62eb8f27-c8ea-4cc3-818d-385ff96e4397",
+  "id": "https://soc.punktrash.club/objects/d811df79-6e54-4f51-841e-0c38bc356467",
+  "published": "2021-05-06T03:52:10.195835Z",
+  "repliesCount": 1,
   "sensitive": false,
+  "source": "I live in Spain\n\nThe S is silent\n\nAnd it's French\n\n🥖😎",
   "summary": "",
   "tag": [],
   "to": ["https://www.w3.org/ns/activitystreams#Public"],