cleanup changesets

Author: stevensJourney

.changeset/cuddly-dingos-check.md

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+---
+'@powersync/node': patch
+---
+Fixed an issue where `readLock` and `writeLock` calls were unnecessarily serialized due to a shared mutex. This did not affect individual calls to `get`, `getAll`, or `getOptional`.

.changeset/short-countries-swim.md

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 ---
 '@powersync/common': patch
-'@powersync/node': patch
 ---
 
-Fixes an issue where the `readLock` and `writeLock` methods of `AbstractPowerSyncDatabase` shared a common wrapped mutex. This primarily affected the Node.js SDK. The concurrency of individual `get`, `getAll`, and `getOptional` executions was not impacted and functioned correctly prior to this fix.
+[Internal] Removed shared mutex implementation of `readLock` and `writeLock`.