update to libressl 2.9.2.1

Refactored pester based E2E test setup (PowerShell#384)

- Set up dedicated test endpoint instead of tweaking main service configuration.
- Got rid of redundant custom test configuration files.
- Cleaned up pester tests directory. Moved test filed to dedicated directory
- Revised TestDaemon start/stop routines to use "netstat" for host process identification. This gets rid of slight flakiness in previous approach.

Workaround for PTY regressions

Changes from PowerShell#353 enabled closing of previously duplicated Console handles - this is causing TTY rendering issues in ssh.exe.
Added a workaround for now to skip closing Console handles.

Cranked version 7.7.2.0 (PowerShell#334)

Cranked version 7.7.2.0

upped version to 7.7.1.0 and fixed some issues with session path reso…

…lution (PowerShell#320)

upped version to 7.7.1.0 and fixed some issues with session path resolution

implement freezero(), use localtime_s() instead of localtime() (Power…

…Shell#300)

PowerShell/Win32-OpenSSH#1121

updates to uninstall-sshd.ps1, cranked version to 7.6.1.0 (PowerShell…

…#295)

minor updates on build helper

OpenSSH for Windows 7.6.0.0

Enabled Control Flow Guard on all projects