Bump powershell (#105)

Bumps powershell from ubuntu-20.04 to ubuntu-22.04.

---
updated-dependencies:
- dependency-name: powershell
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

tools/releaseBuild/Images/microsoft_powershell_ubuntu16.04/Dockerfile

@@ -1,5 +1,5 @@
 # Docker image file that describes an Ubuntu16.04 image with PowerShell and SnapCraft installed from Microsoft APT Repo
-FROM mcr.microsoft.com/powershell:ubuntu-20.04@sha256:1865d5959fde265ed584e162b4f6e0c9e41119cebb4032b0630b540954fddbcd
+FROM mcr.microsoft.com/powershell:ubuntu-22.04@sha256:73c08403182e3cd1a62176b6723645b2d2037cda8deefc0e2c2c01cb814abe43
 
 ARG SNAPCRAFT_CHANNEL=stable