support Ember Power Select to v5

[jelhan]

Adds explicit support for Ember Power Select v5 without dropping support for v4.

• Upgrades ember-power-select to ^5.0.0.
• Adds Ember Try scenario to run latest 4.x version of ember-power-select

[jelhan]

This breaks the build for the ember-bootstrap-v4 scenario: https://github.com/kaliber5/ember-bootstrap-power-select/runs/5812680874?check_suite_focus=true

I'm seeing the following error in CI:

broccoliBuilderErrorStack: Error: @babel/template placeholder "LOG_VIEW_LOOKUPS": Expected string substitution
    at applyReplacement (/home/runner/work/ember-bootstrap-power-select/ember-bootstrap-power-select/node_modules/@babel/template/lib/populate.js:74:13)
    at /home/runner/work/ember-bootstrap-power-select/ember-bootstrap-power-select/node_modules/@babel/template/lib/populate.js:44:7
    at Array.forEach (<anonymous>)
    at populatePlaceholders (/home/runner/work/ember-bootstrap-power-select/ember-bootstrap-power-select/node_modules/@babel/template/lib/populate.js:42:43)
    at /home/runner/work/ember-bootstrap-power-select/ember-bootstrap-power-select/node_modules/@babel/template/lib/string.js:20:51
    at /home/runner/work/ember-bootstrap-power-select/ember-bootstrap-power-select/node_modules/@babel/template/lib/builder.js:75:14
    at Object.buildLiterals (/home/runner/work/ember-bootstrap-power-select/ember-bootstrap-power-select/node_modules/ember-bootstrap/node_modules/@embroider/macros/src/babel/evaluate-json.js:377:73)
    at Object.inlineRuntimeConfig (/home/runner/work/ember-bootstrap-power-select/ember-bootstrap-power-select/node_modules/ember-bootstrap/node_modules/@embroider/macros/src/babel/get-config.js:107:55)
    at PluginPass.enter (/home/runner/work/ember-bootstrap-power-select/ember-bootstrap-power-select/node_modules/ember-bootstrap/node_modules/@embroider/macros/src/babel/macros-babel-plugin.js:77:38)
    at newFn (/home/runner/work/ember-bootstrap-power-select/ember-bootstrap-power-select/node_modules/@babel/traverse/lib/visitors.js:177:21)
    =============
    at Object.buildLiterals (/home/runner/work/ember-bootstrap-power-select/ember-bootstrap-power-select/node_modules/ember-bootstrap/node_modules/@embroider/macros/src/babel/evaluate-json.js:377:34)
    at Object.inlineRuntimeConfig (/home/runner/work/ember-bootstrap-power-select/ember-bootstrap-power-select/node_modules/ember-bootstrap/node_modules/@embroider/macros/src/babel/get-config.js:107:55)
    at PluginPass.enter (/home/runner/work/ember-bootstrap-power-select/ember-bootstrap-power-select/node_modules/ember-bootstrap/node_modules/@embroider/macros/src/babel/macros-babel-plugin.js:77:38)
    at newFn (/home/runner/work/ember-bootstrap-power-select/ember-bootstrap-power-select/node_modules/@babel/traverse/lib/visitors.js:177:21)
    at NodePath._call (/home/runner/work/ember-bootstrap-power-select/ember-bootstrap-power-select/node_modules/@babel/traverse/lib/path/context.js:53:20)
    at NodePath.call (/home/runner/work/ember-bootstrap-power-select/ember-bootstrap-power-select/node_modules/@babel/traverse/lib/path/context.js:40:17)
    at NodePath.visit (/home/runner/work/ember-bootstrap-power-select/ember-bootstrap-power-select/node_modules/@babel/traverse/lib/path/context.js:100:31)
    at TraversalContext.visitQueue (/home/runner/work/ember-bootstrap-power-select/ember-bootstrap-power-select/node_modules/@babel/traverse/lib/context.js:103:16)

Need to investigate before merging.

[simonihmig]

@jelhan google search revealed this one: embroider-build/embroider#1077