Update vcpkg installation commands with fixed release URLs

Microsoft is removing the artifacts feature from vcpkg in July 2026 vcpkg release. 
This PR replaces the redirect `https://aka.ms/vcpkg-init.*` with a url pointing to the vcpkg release as of 2026-04-08 a version where the artifacts feature is still "Experimental" and not notified to be removed.

https://github.com/microsoft/vcpkg-tool/releases/download/2026-04-08/vcpkg-init.*

This will be the mitigation until we have an alternative approach agreed with Microsoft or a replacement tool developed.

Author: jkrech

content/learning-paths/embedded-and-microcontrollers/vcpkg-tool-installation/installation.md

@@ -18,13 +18,13 @@ To install the tool, open your favorite Terminal application and run one of the
 
 {{< tabpane code=true >}}
   {{< tab header="Windows (cmd)" language="shell">}}
-curl -LO https://aka.ms/vcpkg-init.cmd && .\vcpkg-init.cmd
+curl -LO https://github.com/microsoft/vcpkg-tool/releases/download/2026-04-08/vcpkg-init.cmd && .\vcpkg-init.cmd
   {{< /tab >}}
   {{< tab header="Windows (PowerShell)" language="shell">}}
-iex (iwr -useb https://aka.ms/vcpkg-init.ps1)
+iex (iwr -useb https://github.com/microsoft/vcpkg-tool/releases/download/2026-04-08/vcpkg-init.ps1)
   {{< /tab >}}
   {{< tab header="Linux/macOS" language="shell">}}
-. <(curl https://aka.ms/vcpkg-init.sh -L)
+. <(curl https://github.com/microsoft/vcpkg-tool/releases/download/2026-04-08/vcpkg-init.sh -L)
   {{< /tab >}}
 {{< /tabpane >}}