Prepare release v103 (#282)

Co-authored-by: heroku-linguist[bot] <136119646+heroku-linguist[bot]@users.noreply.github.com>

Author: heroku-linguist[bot]

CHANGELOG.md

@@ -2,6 +2,9 @@
 
 ## [Unreleased]
 
+
+## [v103] - 2025-10-27
+
 * Add error for unsupported sbt `2.x` versions. ([#281](https://github.com/heroku/heroku-buildpack-scala/pull/281))
 * Add warning for unsupported sbt `0.x` versions. ([#281](https://github.com/heroku/heroku-buildpack-scala/pull/281))
 * Remove automatic deletion of `project/play-fork-run.sbt` files. Maintainers of legacy apps can consult the PR description for background and how to fix their project in the unlikely case it's necessary. ([#280](https://github.com/heroku/heroku-buildpack-scala/pull/280))
@@ -166,7 +169,8 @@
 *  Upgrade to sbt 0.13.7 launcher
 *  Allow for customized jvm-common package
 
-[unreleased]: https://github.com/heroku/heroku-buildpack-scala/compare/v102...main
+[unreleased]: https://github.com/heroku/heroku-buildpack-scala/compare/v103...main
+[v103]: https://github.com/heroku/heroku-buildpack-scala/compare/v102...v103
 [v102]: https://github.com/heroku/heroku-buildpack-scala/compare/v101...v102
 [v100]: https://github.com/heroku/heroku-buildpack-scala/compare/v99...v100
 [v99]: https://github.com/heroku/heroku-buildpack-scala/compare/v98...v99