[TASK] Support xarray 2023.12

[joshua-cogliati-inl]

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Issue Description

Is your feature request related to a problem? Please describe. It would be useful to support xarray 2023.12 which currently fails when running the TestDataSet unit test.

Error testing ...
checking error CSV var z | Unexpected error message.  
    Received: "No variable named 'z'. Variables on the dataset include ['RAVEN_sample_ID', 'a', 'x', 'time', 'y', 'c', 'b', 'prefix']"
    Expected: "z"
 ... end Error testing (FAILED)

Describe alternatives you've considered Pin to an older version of xarray.

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For Change Control Board: Issue Review

This review should occur before any development is performed as a response to this issue.

• [x] 1. Is it tagged with a type: defect or task?
• [x] 2. Is it tagged with a priority: critical, normal or minor?
• [x] 3. If it will impact requirements or requirements tests, is it tagged with requirements?
• [x] 4. If it is a defect, can it cause wrong results for users? If so an email needs to be sent to the users.
• [x] 5. Is a rationale provided? (Such as explaining why the improvement is needed or why current code is wrong.)

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For Change Control Board: Issue Closure

This review should occur when the issue is imminently going to be closed.

• [x] 1. If the issue is a defect, is the defect fixed?
• [x] 2. If the issue is a defect, is the defect tested for in the regression test system? (If not explain why not.)
• [x] 3. If the issue can impact users, has an email to the users group been written (the email should specify if the defect impacts stable or master)?
• [x] 4. If the issue is a defect, does it impact the latest release branch? If yes, is there any issue tagged with release (create if needed)?
• [x] 5. If the issue is being closed without a pull request, has an explanation of why it is being closed been provided?

[wangcj05]

Checklist is good.