chore: update sponsors [ci skip]

Author: github-actions[bot]

sponsors.json

@@ -12,19 +12,6 @@
     "sidebarSize": "normal",
     "sidebarLogo": "https://cdn.jsdelivr.net/gh/middleapi/static/assets/ScreenshotOne_TextLogo.svg"
   },
-  {
-    "name": "村上さん",
-    "login": "SanMurakami",
-    "avatar": "https://avatars.githubusercontent.com/u/37681609?u=0dd4c7e4ba937cbb52b068c55914b1d8164dc0c7&v=4",
-    "amount": 200,
-    "createdAt": "2025-03-24T15:22:59Z",
-    "tierTitle": "🥈 Silver Sponsor",
-    "tierLevel": 5,
-    "link": "https://misskey.io",
-    "org": false,
-    "sidebarSize": "normal",
-    "sidebarLogo": "https://cdn.jsdelivr.net/gh/middleapi/static/assets/MisskeyHQ_TextLogo.png"
-  },
   {
     "name": null,
     "login": "christ12938",
@@ -480,6 +467,19 @@
     "sidebarSize": "none",
     "sidebarLogo": "https://avatars.githubusercontent.com/u/17376330?u=de3353804be889f009f7e0a1582daf04d0ab292d&v=4"
   },
+  {
+    "name": "村上さん",
+    "login": "SanMurakami",
+    "avatar": "https://avatars.githubusercontent.com/u/37681609?u=0dd4c7e4ba937cbb52b068c55914b1d8164dc0c7&v=4",
+    "amount": -1,
+    "createdAt": "2025-03-24T15:22:59Z",
+    "tierTitle": "Past Sponsors",
+    "tierLevel": 0,
+    "link": "https://github.com/SanMurakami",
+    "org": false,
+    "sidebarSize": "none",
+    "sidebarLogo": "https://cdn.jsdelivr.net/gh/middleapi/static/assets/MisskeyHQ_TextLogo.png"
+  },
   {
     "name": "Zuplo",
     "login": "zuplo",