McLuhan 2.16.0

Upgrade Notice

McLuhan 2.16.0 requires Pressbooks 5.32.0

Minor changes

• Display institutions on webbook home page: #923, #933

Dependencies

• Update to PHPUnit 9.5 and improve CI pipeline: #943
• Bump dependencies: #934, #924, #936, #938, #941, #945, #947, #949, #950, #951