feat: Drop Windows ia32 build

  We've stopped officially supporting 32 bits versions of Windows a long
  time ago but we kept building a 32 bits version of Cozy Desktop
  anyway.

  However, one of our dependencies, `@gyselroth/windows-node-fsstat`
  does not compile for ia32 anymore.
  Since we don't support 32 bits Windows we won't try to fix the
  dependency and stop building our 32 bits version instead.

Author: taratatach

electron-builder-config.js

@@ -63,7 +63,7 @@ const config = {
   },
 
   win: {
-    target: [{ target: 'nsis', arch: ['x64', 'ia32'] }],
+    target: [{ target: 'nsis', arch: ['x64'] }],
     // Comment out the following line if the Digicert server starts failing.
     // Electron-Builder will then swtich back to the default Comodoca server.
     rfc3161TimeStampServer: 'http://timestamp.digicert.com',