[BUGFIX] modify VCS repo for t3g/hubspot-forms
Since bitbucket.typo3.com does not exist anymore, and the package "t3g/hubspot-forms" has been moved to GitHub, the URL for the VCS section in composer.json has been adapted.
- Manually updated the URL (no composer config repositories as the current composer.json was modified manually already)
- ran composer update t3g/hubspot-forms
Resolves: #473 (closed)