Autobuild: Windows: Build with Qt 6.2.2 on 64bit

32bit builds remain on 5.15.2, as Qt6 is not available there.

autobuild/windows/autobuild_windowsinstaller_1_prepare.ps1

@@ -29,14 +29,15 @@ if ( !$? )
 
 echo "Get Qt 64 bit..."
 # intermediate solution if the main server is down: append e.g. " -b https://mirrors.ocf.berkeley.edu/qt/" to the "aqt"-line below
-aqt install-qt --outputdir C:\Qt windows desktop 5.15.2 win64_msvc2019_64
+aqt install-qt --outputdir C:\Qt windows desktop 6.2.2 win64_msvc2019_64
 if ( !$? )
 {
 		throw "64bit Qt installation failed with exit code $LastExitCode"
 }
 
 echo "Get Qt 32 bit..."
 # intermediate solution if the main server is down: append e.g. " -b https://mirrors.ocf.berkeley.edu/qt/" to the "aqt"-line below
+# Qt6 does not provide 32bit binaries, so use latest Qt5 instead:
 aqt install-qt --outputdir C:\Qt windows desktop 5.15.2 win32_msvc2019
 if ( !$? )
 {

autobuild/windows/autobuild_windowsinstaller_2_build.ps1

@@ -33,11 +33,11 @@ echo "Build installer..."
 # Build the installer
 if ($BuildOption -ne "")
 {
-    powershell "$jamulus_project_path\windows\deploy_windows.ps1" "C:\Qt\5.15.2" "C:\Qt\5.15.2" -BuildOption $BuildOption
+    powershell "$jamulus_project_path\windows\deploy_windows.ps1" "C:\Qt\5.15.2" "C:\Qt\6.2.2" -BuildOption $BuildOption
 }
 else
 {
-    powershell "$jamulus_project_path\windows\deploy_windows.ps1" "C:\Qt\5.15.2" "C:\Qt\5.15.2"
+    powershell "$jamulus_project_path\windows\deploy_windows.ps1" "C:\Qt\5.15.2" "C:\Qt\6.2.2"
 }
 if ( !$? )
 {

windows/deploy_windows.ps1

@@ -1,7 +1,7 @@
 param (
     # Replace default path with system Qt installation folder if necessary
     [string] $QtInstallPath32 = "C:\Qt\5.15.2",
-    [string] $QtInstallPath64 = "C:\Qt\5.15.2",
+    [string] $QtInstallPath64 = "C:\Qt\6.2.2",
     [string] $QtCompile32 = "msvc2019",
     [string] $QtCompile64 = "msvc2019_64",
     [string] $AsioSDKName = "asiosdk_2.3.3_2019-06-14",