Automatically push dependency updates #169

If a dependent project triggers an update, it may indicate that a vulnerability has been discovered in an existing dependency. Currently, it initiates a pull request that is automatically submitted for merging.

However, the merged changes are not currently being pushed to the production environment, and I would like them to be.

Note: Sometimes, the automatic update simply pulls a new version of pltxt2htm; in such cases, there is no need to push to production.