Fix dependabot configuration for gh-actions-packages group

[bouwkast]

Summary of changes

Fixes the dependabot file in far too many commits.
Attempts to make it so that we only update patch versions, but I don't think it'll work from my testing.
Swaps from a group PR to 3 open individual PRs (one per action instead of all actions at once) which will be somewhat more manageable IMO.

Reason for change

It was broken and nothing was running

The property '#/updates/5/groups/gh-actions-packages/update-types/0' value "version-update:semver-patch" did not match one of the following values: major, minor, patch

I then tested out if the patch worked and it just updated a checkout action to 3 to 4, so probably don't work.
I then have swapped it to be "individual" PRs but that also seems to be not working.

Implementation details

Deleted version-update:semver- not available in group
Swapped to the individual update (instead of one PR for all) and re-added version-update

Tested out on a dummy repo, it "works" but still updates the packages.

Test coverage

Tested out on a dummy repository and it makes the dependabot file valid again, the actions does work

I tested out each commit I made here.
Each time it bumped my checkout action on a repo from 3 to 4

It may be better / easier to just manage it action individually here and update accordingly as we don't have an easy way to test these out.

Other details