Update openstarboundupdates.json (#1549)

The file name changed again

Author: BroOtti

openstarboundupdates.json

@@ -16,7 +16,7 @@
         "UpdateSourcePlatform": "Linux",
         "UpdateSource": "GithubRelease",
         "UpdateSourceArgs": "OpenStarbound/OpenStarbound",
-        "UpdateSourceData": "OpenStarbound-Linux-GCC-Server.zip",
+        "UpdateSourceData": "OpenStarbound-Linux-Clang-Server.zip",
         "UpdateSourceTarget": "{{$FullBaseDir}}",
         "UnzipUpdateSource": true,
         "OverwriteExistingFiles": true,