fix: unable to run dynamodb tests on non linux CI (#4225)

## Checklist

- [ ] Title matches [Winglang's style guide](https://www.winglang.io/contributing/start-here/pull_requests#how-are-pull-request-titles-formatted)
- [ ] Description explains motivation and solution
- [ ] Tests added (always)
- [ ] Docs updated (only required for features)
- [ ] Added `pr/e2e-full` label if this feature requires end-to-end testing

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examples/tests/sdk_tests/dynamodb-table/transaction.main.w

@@ -1,3 +1,9 @@
+/*\
+skipPlatforms:
+  - win32
+  - darwin
+\*/
+
 bring ex;
 
 let t1 = new ex.DynamodbTable(name: "test1", attributeDefinitions: { "k1": "S", "k2": "S" }, hashKey: "k1", rangeKey: "k2");