Meltano

<https://github.com/meltano/sdk/pull/3804|#3804 fix: Ensure state partition context is a writable object>
Pull request opened by <https://github.com/edgarrmondragon|edgarrmondragon>
Fixes <https://github.com/meltano/sdk/issues/3803|#3803>

*Summary by Sourcery*

Make state partition contexts writable and serializable when creating new state entries.
Bug Fixes:
• Ensure state partition contexts are stored as writable, JSON-serializable dictionaries.
Tests:
• Add coverage confirming state contexts can be serialized when provided as read-only mappings.
<https://github.com/meltano/sdk|meltano/sdk>

<https://github.com/meltano/sdk/pull/3804|#3804 fix: Ensure state partition context is a writable object>
Pull request ready for review by <https://github.com/edgarrmondragon|edgarrmondragon>
<https://github.com/meltano/sdk|meltano/sdk>

<https://github.com/meltano/sdk/pull/3804|#3804 fix: Ensure state partition context is a writable object>
Pull request merged by <https://github.com/edgarrmondragon|edgarrmondragon>
<https://github.com/meltano/sdk|meltano/sdk>