Don't download releases-index.json to resolve major version

[akoeplinger]

Description:
Starting with .NET 5 the minor version is always zero. The earlier releases don't get new versions anymore so we can hardcode the minor version instead of downloading releases-index.json to do the lookup.

Check list:

• Mark if documentation changes are required.
• Mark if tests were added or updated to cover the changes.

[akoeplinger]

ping?

[akoeplinger]

@HarithaVattikuti would you mind reviewing this? thanks

[akoeplinger]

ping

[Frulfump]

ping

It's insane this repo sees so little activity from the maintainers when just using an agent could close 90% of issues by triage and opening PRs and reviewing open PRs.

Can't you escalate internally?

[akoeplinger]

yeah. I'm on vacation for the next few weeks but will see what I can do when I'm back

[Frulfump]

:O maintainer interaction 5-6 hours ago, closing and re-opening the PR. Any chance to get anything more @HarithaVattikuti ?

[priya-kinthali]

Hi @akoeplinger👋, thanks for the contribution!
We have noticed that the CI checks are currently failing due to a formatting issue in src/installer.ts. Could you please run the following commands locally and commit the results?

npm run format
npm run build

This should fix the Prettier formatting error and ensure the build output is up to date. Please let us know in case of any issues.

[Copilot]

Pull request overview

This PR simplifies .NET channel resolution for major-only version inputs by avoiding a network call to releases-index.json, based on the assumption that .NET 5+ channels always use a .0 minor and that .NET Core 1–3 no longer change.

Changes:

• Remove the @actions/http-client-based lookup of releases-index.json for resolving major-only version inputs.
• Hardcode major-to-channel mappings for .NET Core 1–3 and default to ${major}.0 for other numeric majors.

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[akoeplinger]

@priya-kinthali done, thanks

[akoeplinger]

@priya-kinthali forgot to commit the dist/ file, fixedml. there also seems to be a new npm audit error that looks unrelated to the PR