Forces Powershell to use tls1.2

Powershell defaults to tls 1.0 - This forces powershell to use tls 1.2
Tls 1.2 is supported in all current microsoft operating systems and
needed to download chocolatey.

Fixes: #33140
PR-URL: #33609
Backport-PR-URL: #34462
Reviewed-By: Bartosz Sosnowski <bartosz@janeasystems.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>

tools/msvs/install_tools/install_tools.bat

@@ -52,4 +52,4 @@ pause
 
 cls
 
-"%SystemRoot%\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -InputFormat None -ExecutionPolicy Bypass -Command Start-Process '%SystemRoot%\System32\WindowsPowerShell\v1.0\powershell.exe' -ArgumentList '-NoProfile -InputFormat None -ExecutionPolicy Bypass -Command iex ((New-Object System.Net.WebClient).DownloadString(''https://chocolatey.org/install.ps1'')); choco upgrade -y python visualstudio2017-workload-vctools; Read-Host ''Type ENTER to exit'' ' -Verb RunAs
+"%SystemRoot%\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -InputFormat None -ExecutionPolicy Bypass -Command Start-Process '%SystemRoot%\System32\WindowsPowerShell\v1.0\powershell.exe' -ArgumentList '-NoProfile -InputFormat None -ExecutionPolicy Bypass -Command [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; iex ((New-Object System.Net.WebClient).DownloadString(''https://chocolatey.org/install.ps1'')); choco upgrade -y python visualstudio2017-workload-vctools; Read-Host ''Type ENTER to exit'' ' -Verb RunAs