Remove dependencies that are already installed in alpine base images

[viktor-gustafsson]

Summary

I noticed that the list of Alpine dependencies is inaccurate, these packages:

• ca-certificates
• libgcc
• libssl3
• libstdc++

They are already installed in the base images here
https://github.com/dotnet/dotnet-docker/tree/main/src/runtime-deps/8.0/alpine3.23
https://github.com/dotnet/dotnet-docker/tree/main/src/runtime-deps/9.0/alpine3.23
https://github.com/dotnet/dotnet-docker/tree/main/src/runtime-deps/10.0/alpine3.23
https://github.com/dotnet/dotnet-docker/tree/main/src/runtime-deps/11.0/alpine3.23

Describe your changes here.
Update Alpine dependency list based on which packages are installed in the alpine base images for dotnet 8, 9, 10 and 11

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Internal previews

📄 File	🔗 Preview link
docs/core/install/linux-alpine.md	docs/core/install/linux-alpine

[Copilot]

Pull request overview

Updates the Alpine installation documentation by adjusting the stated runtime dependency list to reflect what’s presumed to be present in Alpine base images.

Changes:

• Updated ms.date to 03/20/2026.
• Removed several packages (ca-certificates, libgcc, libssl3, and libstdc++) from the Alpine 3.20+ dependency list.

[Copilot]

The dependency list under ### 3.20+ no longer includes ca-certificates, libgcc, libssl3, or libstdc++, but this page is referenced for manual installs/self-contained apps (not just the runtime-deps Docker images). On a minimal Alpine install those packages aren't guaranteed to be present, and missing libssl3/C++ runtime libs can prevent dotnet from starting or break TLS. Please restore these packages in the list, or explicitly scope the guidance to the official .NET Alpine base images and add a separate note for bare Alpine installs.