Switch mingw links (#12561)

tools/downloader.nim

@@ -45,7 +45,7 @@ proc download(pkg: string; c: Controls) {.async.} =
 
 proc apply(a: Actions; c: Controls) {.async.} =
   if a.mingw:
-    await download("mingw" & arch & "-6.3.0", c)
+    await download("mingw" & arch, c)
   if a.aporia:
     await download("aporia-0.4.0", c)
 

tools/finish.nim

@@ -5,7 +5,7 @@ import strutils, os, osproc, streams, browsers
 
 const
   arch = $(sizeof(int)*8)
-  mingw = "mingw$1-6.3.0.7z" % arch
+  mingw = "mingw$1.7z" % arch
   url = r"https://nim-lang.org/download/" & mingw
 
 var

tools/urldownloader.nim

@@ -427,5 +427,5 @@ when isMainModule:
     else:
       echo "Status [" & $status & "] message = [" & $message & "]"
 
-  downloadToFile("https://nim-lang.org/download/mingw64-6.3.0.7z",
+  downloadToFile("https://nim-lang.org/download/mingw64.7z",
                  "test.zip", {optUseCache}, progress)