Add missing step docker/metadata-action on arm_templates job

[hocinehacherouf]

Description

What's new?

• Add missing step docker/metadata-action on arm_templates job, required by the step Update IoTHub Portal docker image tag in app_service.bicep

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Tests
• Other

[codecov]

Codecov Report

Base: 90.13% // Head: 90.13% // No change to project coverage 👍

Coverage data is based on head (6c98577) compared to base (a7b271f).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1664   +/-   ##
=======================================
  Coverage   90.13%   90.13%           
=======================================
  Files         268      268           
  Lines        8842     8842           
=======================================
  Hits         7970     7970           
  Misses        872      872           

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.