Bump pynws-1.2.1 for NWS

[MatthewFlamm]

Proposed change

Bump pynws version to pin provided units as suggested here. This version update also includes changes to low level functionality (not used by home assistant) and addition of weather alerts (future PR).

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

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# Example configuration.yaml

Additional information

• This PR fixes or closes issue: fixes #
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Checklist

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I have followed the development checklist
• The code has been formatted using Black (black --fast homeassistant tests)
• Tests have been added to verify that the new code works.

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• Documentation added/updated for www.home-assistant.io

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  Updated and included derived files by running: python3 -m script.hassfest.
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  Updated by running python3 -m script.gen_requirements_all.
• Untested files have been added to .coveragerc.

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[MatthewFlamm]

Looks like the CI timed out and needs to be restarted. This doesn't need to do gn 0.112.