edx-sga use v0.12.0-appsembler1 (0.12.0 but local js files)

[bryanlandia]

Change description

use our fork of edx-sga 0.12.0

Type of change

• Bug fix (fixes an issue)
• New feature (adds functionality)

Related issues

https://appsembler.atlassian.net/browse/ENG-307

Checklists

Development

• Lint rules pass locally
• Application changes have been tested thoroughly
• Automated tests covering modified code pass

Security

• Security impact of change has been considered
• Code follows company security practices and guidelines

Code review

• Pull request has a descriptive title and context useful to a reviewer. Screenshots or screencasts are attached as necessary
• "Ready for review" label attached and reviewers assigned
• Changes have been reviewed by at least one other contributor
• Pull request linked to task tracker where applicable

[github-actions]

Checking git merge conflicts against https://github.com/edx/edx-platform.git

Comparing with	open-release/koa.master
Benchmark conflicts with appsembler/psu-temp-tahoe-juniper	105
Current conflicts	105
Summary	Good work! No added conflicts.

Comparing with	master
Benchmark conflicts with appsembler/psu-temp-tahoe-juniper	334
Current conflicts	334
Summary	Good work! No added conflicts.