backport 1.13.1 changes to release/1.13.x (hashicorp#13405)

* Merge pull request hashicorp#13404 from hashicorp/karthik/prepare_version_1.13.1

prepare version 1.13.1

* Merge pull request hashicorp#13396 from hashicorp/karthik/powershell_fix

Powershell Script Config Environment Variables Fix

prepare version 1.13.2-dev (hashicorp#13408)

Update PR template for PCI (hashicorp#13387)

version: cut release 1.12.0

version: cut packer 1.12.0-alpha1

version: cut release 1.11.2

Cut release 1.11.1

Merge pull request hashicorp#13007 from hashicorp/backport/bump-1.11-…

…release-date/accurately-usable-goose

This pull request was automerged via backport-assistant

version: tag version as 1.11.0-beta

Updated CHANGELOG 1.10.3