Unpin importlib-metadata

[timmc-edx]

In #406 we pinned importlib-metadata to before 7.x. Once open-telemetry/opentelemetry-python#3570 resolves we should unpin this.

This pin is in place because we want to use opentelemetry from edx-django-utils. Normally this could be added as a constraint in edx-django-utils, where we're adding the opentelemetry dependency. However, when we compile pip-tools.txt in dependent IDA repos, that layer ends up using version 7.x, and then there's no undoing that when compiling base.txt. So we need to pin it globally, for now.

[zameel7]

@timmc-edx, can we unpin this now? Seems like open-telemetry/opentelemetry-python#3570 is resolved.

[timmc-edx]

Ah yes, thank you! I had forgotten to subscribe to that issue.

[zameel7]

Ah yes, thank you! I had forgotten to subscribe to that issue.

Any time! Hope we can close this issue now. @timmc-edx

[timmc-edx]

Oh yeah, we can! Thanks again.