[Dependencies] Upgrade PMIX to 5.0.6

[himani2411]

Description of changes

• Upgrade PMIX to 5.0.6

Tests

• AMI Creation and run below test

  schedulers:
    test_slurm.py::test_slurm:
      dimensions:
        - regions:  ["us-east-1"]
          instances: {{ common.INSTANCES_DEFAULT_X86 }}
          oss:  ["alinux2023"]
          schedulers: ["slurm"]
    

References

• Link to impacted open issues.
• Link to related PRs in other packages (i.e. cookbook, node).
• Link to documentation useful to understand the changes.

Checklist

• Make sure you are pointing to the right branch.
• If you're creating a patch for a branch other than develop add the branch name as prefix in the PR title (e.g. [release-3.6]).
• Check all commits' messages are clear, describing what and why vs how.
• Make sure to have added unit tests or integration tests to cover the new/modified code.
• Check if documentation is impacted by this change.

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By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[himani2411]

Test passed but not reported https://github.com/aws/aws-parallelcluster-cookbook/pull/2870/checks?check_run_id=36669321081