* chore: 🤖 upgrade ember-cli-flash to v6 * chore: 🤖 remove unneeded timer disabling This is no longer needed since the test helpers as of v5 are explicit: disableTimeout and enableTimeout Old world: > Essentially importing this helper would cause the init hook of the FlashObject to become a no-op and disable the timeout running in consuming apps test runs. > To get the same behaviour as "Old world 🌐 " a consuming app needs only to remove the blueprint import. ✅ https://github.com/adopted-ember-addons/ember-cli-flash/pull/392 * chore: 🤖 add @embroider/macros for ember-cli-flash ember-cli-flash requires @embroider/macros as a dev dependency: https://github.com/adopted-ember-addons/ember-cli-flash/pull/392/files/6c5743f424d14143c9309bcb0be8152fdaec11a2#r1369522866 https://github.com/adopted-ember-addons/ember-cli-flash/pull/395