ci: add font-install download step to checks.yml

Author: NGPixel

.github/workflows/checks.yml

@@ -185,6 +185,7 @@ jobs:
 #       shell: pwsh
 #       working-directory: .github/scripts
 #       run: |
+#         Invoke-WebRequest -Uri 'https://github.com/ietf-tools/common/raw/main/scripts/font-install/font-install.exe' -OutFile font-install.exe
 #         & ./font-install.exe -debug https://fonts.google.com/download?family=Roboto%20Mono
 #         & ./font-install.exe -debug https://noto-website-2.storage.googleapis.com/pkgs/Noto-unhinted.zip