fix(tools): use commonjs in bump-package-version.js

It seems before 9296639 the script was
run in developement env with no modules setting, which mean it defaulted
to the poorly documented `auto`.
Looking at their codebase it seems `auto` is simply `commonjs`.  This
explains why it worked before.

We could have used BABEL_ENV=cjs in front of the babel-node command but
I've moved this file to cjs as it's more simple and is consistent with
other release scripts.

scripts/release/bump-package-version.js

@@ -1,10 +1,10 @@
 /* eslint-disable no-console */
 
-import fs from 'fs';
-import path from 'path';
-import mversion from 'mversion';
-import semver from 'semver';
-import { version as currentVersion } from '../../package.json';
+const fs = require('fs');
+const path = require('path');
+const mversion = require('mversion');
+const semver = require('semver');
+const { version: currentVersion } = require('../../package.json');
 
 if (!process.env.VERSION) {
   throw new Error(

scripts/release/publish-maintenance.sh

@@ -40,7 +40,7 @@ conventional-changelog --preset angular --output-unreleased | less
 # printf "\n\nRelease: Please enter the new chosen version > "
 printf "\n=> Release: please type the new chosen version > "
 read -e newVersion
-VERSION=$newVersion babel-node ./scripts/release/bump-package-version.js
+VERSION=$newVersion node ./scripts/release/bump-package-version.js
 
 # build new version
 NODE_ENV=production VERSION=$newVersion npm run build

scripts/release/publish.js

@@ -157,7 +157,7 @@ inquirer
         // bump new version
         shell.echo(colors.blue(`Bump version to "${newVersion}"`));
         shell.exec(
-          `VERSION=${newVersion} babel-node ./scripts/release/bump-package-version.js`
+          `VERSION=${newVersion} node ./scripts/release/bump-package-version.js`
         );
 
         // build library new version