Update server metadata for Sheepcraft (#4525)

Author: simplerandomuser

servers/sheepcraft/metadata.json

@@ -6,25 +6,26 @@
     "addresses": [
         "sheepcraft.org"
     ],
-    "primaryAddress": "play.sheepcraft.org",
+    "primaryAddress": "mc.sheepcraft.org",
     "primaryColor": "#9900ff",
     "secondaryColor": "#ffffff",
     "minecraftVersions": [
         "1.8.*",
-        "1.19.*"
+        "1.21.*"
     ],
     "primaryMinecraftVersion": "1.8.9",
-    "primaryRegion": "SA",
+    "primaryRegion": "NA",
     "regions": [
         "NA",
         "SA",
         "EU"
     ],
     "gameTypes": [
         "PvP",
-        "Survival"
+        "Survival",
+        "Prison"
     ],
     "socials": {
         "discord": "https://discord.gg/sheepcraft"
     }
-}
+}