Simplify tag fetching in CI

[thekaveman]

@angela-tran this was a great find and fix!

I think it can be done a bit simpler directly from the actions/checkout@v4 step:

- uses: actions/checkout@v4
  with:
    # Number of commits to fetch. 0 indicates all history for all branches and tags.
    # Default: 1
    fetch-depth: 0 
    
    # Whether to fetch tags, even if fetch-depth > 0.
    # Default: false
    fetch-tags: true

Maybe the fetch-depth doesn't matter as much when we force fetch-tags, which would be even simpler!

We also noticed this as a potential problem for the auto release notes generation happening in the release workflow

Acceptance criteria

• The docker-publish.yml workflow is updated with the above syntax
• The release workflow is updated with the above syntax

Originally posted by @thekaveman in #392 (comment)