Automatically rebuild the package when a dependency is updated

[tim-s-ccs]

When dependabot updates the AWS SDK or actions, the tests fail because the dist will need to be updated.
Instead of updating these branches manually every time, I would like to add an automated job that can do it for me when it detects a push to a branch with names:

• dependabot/npm_and_yarn/aws-sdk-*
• dependabot/npm_and_yarn/actions/core-*

I did already try this but there were some issues (see #42)

Ultimately, this job would need to run first before any other jobs on branches that we are looking for. And we only want it to do everything the first time round, i.e. after the first commit, to prevent infinite update loops.