Update composer

[aOelschlager]

What does this Pull Request do?

Updates the composer.json and composer.lock files to use islandora 2.5. This release of islandora fixes the batch upload children issue.

• Related GitHub Issue:
  [BUG] Batch Upload Children can't upload any files Islandora/documentation#2129

• Other Relevant Links:
  Fix/batch upload children, with validation according to default widget Islandora/islandora#896
  Update bulk upload children docs. Islandora/documentation#2187

What's new?

• Updated composer.json to require islandora 2.5
• Updated composer.lock to include ctools 4.0.1 and islandora 2.5.0
• Updated core extensions to include ctools
• Does this change add any new dependencies? Yes
• Does this change require any other modifications to be made to the repository
  (i.e. Regeneration activity, etc.)? No
• Could this change impact execution of existing code? No

How should this be tested?

• If using isle-dc, replace the starter site repository clone in the starter_dev function of the Makefile with this pr: git clone -b update-composer https://github.com/aOelschlager/islandora-starter-site
• Then run make starter_dev. This should give you a fresh site running islandora 2.5
• Try using the batch upload children form as directed here in the documentation pr: Update bulk upload children docs. Islandora/documentation#2187

Documentation Status

• Does this change existing behaviour that's currently documented? Yes but it's a pr ready to merge.
• Does this change require new pages or sections of documentation? No
• Who does this need to be documented for? PR documentation addresses that.
• Associated documentation pull request(s): Update bulk upload children docs. Islandora/documentation#2187

Additional Notes:

I'm not sure how to test this with the playbook deployment so I didn't include those instructions in the how to test section.

Interested parties

Tag (@ mention) interested parties or, if unsure, @Islandora/committers