Build(deps-dev): Bump ember-cli from 3.9.0 to 3.21.2

[dependabot-preview[bot]]

Bumps ember-cli from 3.9.0 to 3.21.2.

Release notes

Sourced from ember-cli's releases.

Release 3.21.2

Blueprint Changes

• ember new diff
• ember addon diff

Changelog

• #9327 Update addon README.md to indicate Ember 3.16 minimum. @kellyselden

Release 3.21.1

Blueprint Changes

• ember new diff
• ember addon diff

Changelog

• #9321 Add missing ember-lts-3.20 matrix build to CI configuration. @kellyselden
• #9323 Remove errant ember-lts-3.12 matrix build from CI configuration. @rwjblue
• #9324 Fix transpilation issues with modern browsers by migrating from ember-cli-uglify to ember-cli-terser @rwjblue

Release 3.21.0

v3.21.0

Blueprint Changes

• ember new diff
• ember addon diff

Changelog

• #9305 Update blueprint dependencies to latest versions. @rwjblue
• #9306 Ensure that outputReady receives the final output directory. @rwjblue
• #9308 Add Ember 3.20 LTS to ember-try configuration. @rwjblue
• #9309 Update blueprint dependencies to latest @rwjblue
• #9310 Drop Ember 3.12 from default addon testing matrix. @rwjblue
• #9259 Implement emberjs/rfcs#635: ember new --lang @josephdsumner
• #9299 Remove explicit yarn install in blueprint generated .travis.yml (use the Travis CI default of yarn install --frozen-lockfile) @kellyselden
• #9289 Update blueprint dependencies / devDependencies @rwjblue

Release 3.21.0-beta.2

Blueprint Changes

• ember new diff
• ember addon diff

Changelog

Changelog

Sourced from ember-cli's changelog.

v3.21.2

Blueprint Changes

• ember new diff
• ember addon diff

Changelog

• #9327 Update addon README.md to indicate Ember 3.16 minimum. @kellyselden

Thank you to all who took the time to contribute!

v3.21.1

Blueprint Changes

• ember new diff
• ember addon diff

Changelog

• #9321 Add missing ember-lts-3.20 matrix build to CI configuration. @kellyselden
• #9323 Remove errant ember-lts-3.12 matrix build from CI configuration. @rwjblue
• #9324 Fix transpilation issues with modern browsers by migrating from ember-cli-uglify to ember-cli-terser @rwjblue

Thank you to all who took the time to contribute!

v3.21.0

Blueprint Changes

• ember new diff
• ember addon diff

Changelog

• #9305 Update blueprint dependencies to latest versions. @rwjblue
• #9306 Ensure that outputReady receives the final output directory. @rwjblue
• #9308 Add Ember 3.20 LTS to ember-try configuration. @rwjblue
• #9309 Update blueprint dependencies to latest @rwjblue
• #9310 Drop Ember 3.12 from default addon testing matrix. @rwjblue
• #9259 Implement emberjs/rfcs#635: ember new --lang @josephdsumner
• #9299 Remove explicit yarn install in blueprint generated .travis.yml (use the Travis CI default of yarn install --frozen-lockfile) @kellyselden
• #9289 Update blueprint dependencies / devDependencies @rwjblue

v3.20.2

Blueprint Changes

Commits

• 97b3bd7 Release 3.21.2
• d1777f4 Add v3.21.2 to CHANGELOG.md.
• c1f0e7b Merge pull request #9327 from kellyselden/ember_3.16_min
• 8831e2f mention the new ember 3.16 minimum in the addon readme
• ce6e2fa Release 3.21.1
• 0f77a8e Add v3.21.1 to CHANGELOG.md.
• 627ad64 Merge pull request #9315 from ember-cli/dependabot/npm_and_yarn/find-yarn-wor...
• f2b6f71 Merge pull request #9324 from ember-cli/migrate-from-uglify-to-terser
• b7ce441 Migrate to ember-cli-terser
• 069dbf3 Merge pull request #9323 from ember-cli/drop-3-12-in-ci-config
• Additional commits viewable in compare view

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Superseded by #276.