Change golang datasource to read data from go.dev instead of github

[viceice]

Describe the proposed change(s).

read from here https://go.dev/dl/?mode=json&include=all

That way we can ensure binaries are available.

• Artifact error for Golang repositories now 1.22 has been released github-action#816

[mikaello]

JSONata for those wanting to try the go.dev datasource:

{
  "releases": $[stable = true].{ "version": $split(version, "go")[1] },
  "sourceUrl": "https://github.com/golang/go",
  "homepage": "https://go.dev/",
  "changelogUrl": "https://go.dev/doc/devel/release"
}

(see playground for result: https://try.jsonata.org/FuOjg91Vm)

Add this to your Renovate config to make it available as a custom datasource with name custom.golang-version:

  "customDatasources": {
    "golang-version": {
      "defaultRegistryUrlTemplate": "https://go.dev/dl/?mode=json&include=all",
      "transformTemplates": [
        "{ \"releases\": $[stable = true].{ \"version\": $split(version, \"go\")[1] }, \"sourceUrl\": \"https://github.com/golang/go\", \"homepage\": \"https://go.dev/\", \"changelogUrl\": \"https://go.dev/doc/devel/release\" }"
      ]
    }
  }