Capture `MavenMetadata.lastUpdated` for a recipe that shows outdated dependencies

[timtebeek]

What problem are you trying to solve?

Apart from the most recent version, we might also be interested in capturing when that dependency was last updated.

This then allows for a recipe that tells out where you might be using dependencies that have not seen a release in a long time, perhaps because they have been relocated: https://docs.openrewrite.org/recipes/java/dependencies/relocateddependencycheck

Describe the solution you'd like

Add a lastUpdated field to MavenMetadata.Versioning https://github.com/openrewrite/rewrite/blob/56986647f0c8b8a162d548d52c70572b939f1d0a/rewrite-maven/src/main/java/org/openrewrite/maven/tree/MavenMetadata.java#L55-L63

Based on the metadata pulblished in Maven repositories.

<metadata>
  <groupId>org.openrewrite.recipe</groupId>
  <artifactId>rewrite-recipe-bom</artifactId>
  <versioning>
    <latest>2.15.0-SNAPSHOT</latest>
    <versions>
      <version>0.1.0-SNAPSHOT</version>
      <!-- truncated -->
      <version>2.15.0-SNAPSHOT</version>
    </versions>
    <lastUpdated>20240712162001</lastUpdated>
  </versioning>
</metadata>

https://oss.sonatype.org/service/local/repositories/snapshots/content/org/openrewrite/recipe/rewrite-recipe-bom/maven-metadata.xml https://repo1.maven.org/maven2/org/openrewrite/recipe/rewrite-recipe-bom/maven-metadata.xml

Additional context

Inspired by https://github.com/Giovds/outdated-maven-plugin