Add GWSL 1.3.8 Update (#14098)

I don't know how GWSL got in this repository but might as well keep it updated.

manifests/o/opticos/gwsl/1.3.8/opticos.gwsl.yaml

@@ -0,0 +1,23 @@
+PackageIdentifier: opticos.gwsl
+Publisher: Opticos Studios
+PackageName: GWSL
+Author: opticos
+ShortDescription: GWSL automates the process of running X on top of WSL, over SSH, and more.
+Tags:
+- wsl
+- linux
+- xserver
+- ssh
+- fluent design
+- python
+PackageUrl: https://github.com/Opticos/GWSL-Source
+License: Modified MIT License
+PackageVersion: 1.3.8
+InstallerType: inno
+Installers:
+- Architecture: x64
+  InstallerUrl: https://github.com/Opticos/GWSL-Source/releases/download/v138/GWSL.Traditional.138.release.x64.exe
+  InstallerSha256: 88e00da831efefcfd9be1ccf4bccae379c68ad80a5235f878a898e2fd04cb508
+PackageLocale: en-US
+ManifestType: singleton
+ManifestVersion: 1.0.0