juliaup versionsdb.json nondeterministic order

[bmwiedemann]

While working on reproducible builds for openSUSE, I found that
our juliaup 1.6.0 package varied from entry order issues in the versionsdb.json file.

 {
   "AvailableVersions": {
-    "1.1.0+0~x86": {
-      "UrlPath": "bin/linux/x86/1.1/julia-1.1.0-linux-i686.tar.gz"
+    "1.6.5+0~x64": {
+      "UrlPath": "bin/linux/x64/1.6/julia-1.6.5-linux-x86_64.tar.gz"
     },

This caused variations in resulting /usr/bin/julialauncher and /usr/bin/juliaup binaries.

It should be possible to build twice and get identical binaries.

[davidanthoff]

I believe this should now be fixed on main.