fix(powershell-extended): use SilentlyContinue for Update-Help to prevent build failures on 404 errors

Update-Help for Microsoft.PowerShell.ThreadJob returns HTTP 404, causing
the build to fail with -ErrorAction Stop. Changed to -ErrorAction
SilentlyContinue so missing help content is tolerated.

Version: 2.1.0 -> 2.1.1

Author: jpawlowski

src/powershell-extended/devcontainer-feature.json

@@ -4,7 +4,7 @@
   "legacyIds": [
     "powershell"
   ],
-  "version": "2.1.0",
+  "version": "2.1.1",
   "description": "Installs PowerShell on AMD64 and ARM64 architectures, with optional resources from the PowerShell Gallery via PSResourceGet. Includes a custom Oh My Posh terminal prompt theme and customizable profile files. Supports advanced installation options for PowerShell modules and scripts.",
   "documentationURL": "https://github.com/jpawlowski/devcontainer-features/tree/main/src/powershell-extended",
   "licenseURL": "https://github.com/jpawlowski/devcontainer-features/tree/main/LICENSE.txt",

src/powershell-extended/install.sh

@@ -421,11 +421,11 @@ fi
 if [ "$POWERSHELL_UPDATE_MODULESHELP" = 'true' ]; then
     echo "Updating PowerShell Modules Help"
     if [ "${USERNAME}" = 'root' ]; then
-        "$(command -v pwsh)" -NoLogo -NoProfile -Command "$prefs; Update-Help -Scope AllUsers -UICulture en-US -ErrorAction Stop -ProgressAction Ignore"
+        "$(command -v pwsh)" -NoLogo -NoProfile -Command "$prefs; Update-Help -Scope AllUsers -UICulture en-US -ErrorAction SilentlyContinue -ProgressAction Ignore"
         touch "/root/.local/state/powershell/.updateHelpMarker"
     else
         # shellcheck disable=SC2140
-        sudo -H -u "${USERNAME}" "$(command -v pwsh)" -NoLogo -NoProfile -Command "$prefs; Update-Help -Scope CurrentUser -UICulture en-US -ErrorAction Stop -ProgressAction Ignore; New-Item -Path "\${HOME}/.local/state/powershell/.updateHelpMarker" -ItemType File -Force"
+        sudo -H -u "${USERNAME}" "$(command -v pwsh)" -NoLogo -NoProfile -Command "$prefs; Update-Help -Scope CurrentUser -UICulture en-US -ErrorAction SilentlyContinue -ProgressAction Ignore; New-Item -Path "\${HOME}/.local/state/powershell/.updateHelpMarker" -ItemType File -Force"
     fi
 fi