Update the Image Optimize module from ~3.0 to ~4.0 (first stable release)

Imageapi_optimise is using an ancient version

Steps to reproduce

Check version in composer.json and version installed on sites. It is using dev versions.

Proposed resolution

Update composer.json to recommend stable version for this dependency.

Remaining tasks

• ✅ File an issue about this project
• ✅ Addition/Change/Update/Fix to this project
• ✅ Testing to ensure no regression
• ➖ Automated unit/functional testing coverage
• ➖ Developer Documentation support on feature change/addition
• ➖ User Guide Documentation support on feature change/addition
• ➖ Accessibility and Readability
• ✅ Code review from 1 Varbase core team member
• ✅ Full testing and approval
• ✅ Credit contributors
• ✅ Review with the product owner
• ✅ Update Release Notes and Update Helper on new feature change/addition
• ✅ Release varbase-9.0.7, varbase_media-9.0.12

Varbase update type

• ✅ No Update
• ➖ Optional Update
• ➖ Forced Update
• ➖ Forced Update if Unchanged

User interface changes

• N/A

API changes

• N/A

Data model changes

• N/A

Release notes snippet

• Issue #3288722 by NaheemSays: Updated the Image Optimize module from ~3.0 to ~4.0 (first stable release)