use zip files for faster win install

Revert "use zip files for faster win install"

This reverts commit a992bbe.

Update installer.ts

Update installer.js

src/installer.ts

@@ -99,7 +99,7 @@ function getDesiredFileExts(): [string, boolean, string] {
     let fileExt2: string
 
     if (osPlat == 'win32') {
-        fileExt1 = 'exe'
+        fileExt1 = 'zip'
         hasFileExt2 = false
         fileExt2 = ''
     } else if (osPlat == 'darwin') {
@@ -235,7 +235,7 @@ export async function installJulia(versionInfo, version: string, arch: string):
         case 'win32':
             if (version.endsWith('nightly') || semver.gtr(version, '1.3', {includePrerelease: true})) {
                 // The installer changed in 1.4: https://github.com/JuliaLang/julia/blob/ef0c9108b12f3ae177c51037934351ffa703b0b5/NEWS.md#build-system-changes
-                await exec.exec('powershell', ['-Command', `Start-Process -FilePath ${juliaDownloadPath} -ArgumentList "/SILENT /dir=${path.join(process.cwd(), tempInstallDir)}" -NoNewWindow -Wait`])
+                await exec.exec('powershell', ['-Command', `Expand-Archive -Path ${juliaDownloadPath} -DestinationPath ${tempInstallDir}`])
             } else {
                 await exec.exec('powershell', ['-Command', `Start-Process -FilePath ${juliaDownloadPath} -ArgumentList "/S /D=${path.join(process.cwd(), tempInstallDir)}" -NoNewWindow -Wait`])
             }