Bump assets/syntaxes/02_Extra/PowerShell from 4a0a076 to 742f0b5 (#1935)

* Bump assets/syntaxes/02_Extra/PowerShell from `4a0a076` to `742f0b5`

Bumps [assets/syntaxes/02_Extra/PowerShell](https://github.com/PowerShell/EditorSyntax) from `4a0a076` to `742f0b5`.
- [Release notes](https://github.com/PowerShell/EditorSyntax/releases)
- [Commits](https://github.com/PowerShell/EditorSyntax/compare/4a0a076661d26473cac71b9a17e6a759e9b1c643...742f0b5d4b60f5930c0b47fcc1f646860521296e)

---
updated-dependencies:
- dependency-name: assets/syntaxes/02_Extra/PowerShell
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

* Do machine-conversion from .tmLanguage to .sublime-syntax

The new .sublime-syntax file is a pure "Tools" -> "Developer" -> "New Syntax
from ..." conversion from a licenced version of Sublime Text, Version 3.1.1,
Build 3176 with the .tmLanguage as the source file. No manual changes has been
made.

* Update regression test and add CHANGELOG.md entry

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Martin Nordholts <enselic@gmail.com>

CHANGELOG.md

@@ -42,6 +42,7 @@
 - The `requirements.txt` syntax has been removed due to incompatible license requirements.
 - Dart, new highlighter, see #1959 (@Ersikan)
 - SCSS and Sass syntaxes updated, see #1766 (@Enselic)
+- PowerShell syntax updated, see #1935 (@Enselic)
 
 ## New themes