Integration tests stall on mcp-prod deployments

[ividito]

When deploying to mcp-prod, the step to run integration tests hangs without generating an error. The action will run, without doing anything, until the workflow is cancelled.

Refs:
https://github.com/NASA-IMPACT/veda-deploy/actions/runs/17274382018
#141 (comment)
#142 -> this is a partial fix to prevent actions from running forever

I originally thought this might be a temporary GHA issue, but a re-run today indicates that this is still a problem, and it only occurs on mcp-prod.

The test suite runs and passes locally. Deployments are still successful, but cannot proceed to post-deployment steps.