Issue #3264595 by dydave, flyke: Added dependency on the Core Toolbar module...
https://www.drupal.org/project/toolbar_menu/issues/3264595
Added dependency on the Core Toolbar module library for the ToolbarModel class.
Removed unneeded library version.
Additional changes in Tests class:
- Removed the
toolbarmodule from the modules to be enabled, since it is required as a dependency by the module and should be enabled by default. - Updated the test theme to use
starkinstead ofclarofor potential compatibility issues with different Drupal Core versions.