Suggest to update only to stable version

[lwronski]

No description provided.

[alexarchambault]

I think a way to test would be to create a mock repository with both stable and unstable versions, and check that the diagnostics suggest the right version updates. Something along those lines

val inputs = TestInputs(
  os.rel / "repo" / "test-org" / "test-name-1" / "maven-metadata.xml" ->
    """// see https://repo1.maven.org/maven2/io/get-coursier/scalapy-echo_2.13/maven-metadata.xml for an example …
      |""".stripMargin,
  os.rel / "repo" / "test-org" / "test-name-1" / "0.1.0" / "test-name-1-0.1.0.pom" ->
    """// see https://repo1.maven.org/maven2/io/get-coursier/scalapy-echo_2.13/1.0.6/scalapy-echo_2.13-1.0.6.pom for an example …
      |""".stripMargin,
  os.rel / "repo" / "test-org" / "test-name-1" / "0.1.1-M1" / "test-name-1-0.1.1-M1.pom" ->
    """// see https://repo1.maven.org/maven2/io/get-coursier/scalapy-echo_2.13/1.0.6/scalapy-echo_2.13-1.0.6.pom for an example …
      |""".stripMargin,
  // etc.
)

inputs.fromRoot { root =>
  // use (root / "repo").toNIO.toUri.toASCIIString as a repo
}

[tgodzik]

LGTM!