ci: Add nr-assistant dependency to build and push workflow

[ppawlowski]

Description

This pull requests adds @flowfuse/nr-assistant to the list of dependencies required during nightly build of nr-launcher package.
Additionally, it updates reusable workflows to their latest versions.

Related Issue(s)

closes #259

Checklist

• I have read the contribution guidelines
• Suitable unit/system level tests have been added and they pass
• Documentation has been updated
  • Upgrade instructions
  • Configuration details
  • Concepts
• Changes flowforge.yml?
  • Issue/PR raised on FlowFuse/helm to update ConfigMap Template
  • Issue/PR raised on FlowFuse/CloudProject to update values for Staging/Production

Labels

• Includes a DB migration? -> add the area:migration label

[Steve-Mcl]

Piotr, does this not need a section similar to what project nodes have?

https://github.com/FlowFuse/nr-launcher/pull/260/files#diff-551d1fcf87f78cc3bc18a7b332a4dc5d8773a512062df881c5aba28a6f5c48d7L6-L9

      nr_project_nodes_release_name:
        description: 'nr-project-nodes package version'
        required: false
        default: 'nightly'

[ppawlowski]

Piotr, does this not need a section similar to what project nodes have?

https://github.com/FlowFuse/nr-launcher/pull/260/files#diff-551d1fcf87f78cc3bc18a7b332a4dc5d8773a512062df881c5aba28a6f5c48d7L6-L9

      nr_project_nodes_release_name:
        description: 'nr-project-nodes package version'
        required: false
        default: 'nightly'

Nope, it is a workflow "feature" which we never implemented. However, we might use it in the near future, that is why it is still there.

[Steve-Mcl]

From settings values PoV, i approve but will leave open for Ben to review and merge.