Refine `buildSrc` so that `spring.mavenRepositories()` are considered
for all build types (not just milestones and snapshots). We now pass
"springFrameworkVersion" to `SpringRepositorySupport.groovy` so that
repo.spring.io doesn't get added for OSS builds using release artifacts.
Closes gh-46823
As of this new major, all milestones should be shipped to central as
well. This commit removes the inclusion of the milestone repository as
this shouldn't be needed anymore.
Closes gh-46420
Create a small Groovy script that can be used in `settings.gradle`
files to extend `repositories` to support the various maven
repositories required for our build.
See gh-42333
Phillip Webb
Stéphane Nicoll