setup.py uses invalid SPDX license identifier

[PaulGarnerUk]

• Package Name: azure-appconfiguration-provider
• Package Version: 2.4.0
• Operating System: linux/na
• Python Version: 3.14.5/na

Describe the bug
The licence field, bundled into the project via setup.py contains licence="MIT Licence". This is not a valid SPDX expression ( https://spdx.org/licenses/ ) and so when anyone generates an SBOM for projects using this package, the licence is not correctly identified and they then have a manual process of fixing this in the sbom management tool (we use DependencyTrack) to set the correct licence.

The correct value should be licence="MIT"

This certainly affects azure-appconfiguration-provider, but the same issue affects many other packages within this repo.

• azure-appconfiguration
• azure-keyvault-secrets
• azure-storage-blob
• azure-monitor-opentelemetry
• azure-monitor-opentelemetry-exporter

...to name just a few that DependencyTrack flagged up as not having valid licences (due to the spdx expression being incorrect)

To Reproduce
Steps to reproduce the behavior:

1. Generate an sbom using cyclonedx (or another sbom tool) for a project containing this package
2. Upload the sbom to DependencyTrack
3. DependencyTrack has no Licence for the affected packages

Expected behavior
I expect the licence to be identified by it's spdx expression

Screenshots
n/a but happy to provide further context on request.

Additional context
As above

[PaulGarnerUk]

I'd be happy to submit a PR to start fixing these - but I'm not a native Python dev and so would welcome more input first.

I also appreciate there are different ways to set the licence information, so this could form part of a larger effort to standardise onto one technique that emits valid SPDX identifiers.