Increase tolerance on xhat dev test

[ChristopherRabotin]

Effects

All the tests to pass on Github Actions.

If this change adds or modifies a validation case

• Yes: The initial state deviation 16.45 km off and after the OD (without any IOD or iteration), it's down to < 200 m on my machine but it's 330 m on Github action. I increased the acceptable error in this test. Initial orbit determination #84 will add IOD options, and Add least squares batch filter #85 will add a faster converging iteration OD method, so these will reduce these kinds of errors further.

[github-actions]

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