message: cli: include version info and upgrade helper link in bump output
diff: @@ -420,17 +420,32 @@ export async function bumpBackstageJsonVersion(version: string) {
  throw e;
  });
  - if (backstageJson?.version === version) {
  + const prevVersion = backstageJson?.version;
  +
  + if (prevVersion === version) {
  return;
  }
  + const { yellow, cyan, green } = chalk;
  + if (prevVersion) {
  + const link = `https://backstage.github.io/upgrade-helper/?from=${prevVersion}&to=${version}`;
  console.log(
  - chalk.yellow(
  - typeof backstageJson === 'undefined'
  - ? `Creating ${BACKSTAGE_JSON}`
  - : `Bumping version in ${BACKSTAGE_JSON}`,
  + yellow(
  + `Upgraded from release ${green(prevVersion)} to ${green(
  + version,
  + )}, please review the app changes:`,
  ),
  );
  + console.log();
  + console.log(` ${cyan(link)}`);
  + console.log();
  + } else {
  + console.log(
  + yellow(
  + `Your project is now at version ${version}, which has been written to ${BACKSTAGE_JSON}`,
  + ),
  + );
  + }
  await fs.writeJson(
  backstageJsonPath,
  