fix: increase RPC test timeout - CI flaky issue

[ruthwikdasyam]

Problem

test_exception_handling_sync[lcm_rpc_context-lcm] fails intermittently in CI with TimeoutError after 2.0s. LCM multicast discovery + RPC round-trip can exceed 2s on loaded CI runners.

#1381
Closes DIM-642

Solution

Increase rpc_timeout from 2.0s to 5.0s for all three call_sync invocations in the test. Only affects failure path - passing tests return instantly.

Breaking Changes

None

How to Test

pytest dimos/protocol/rpc/test_spec.py::test_exception_handling_sync -v

Contributor License Agreement

• I have read and approved the CLA.

[greptile-apps]

Greptile Summary

Increased rpc_timeout from 2.0s to 5.0s in test_exception_handling_sync to address intermittent CI failures caused by LCM multicast discovery + RPC round-trip exceeding 2s on loaded CI runners.

• All three call_sync invocations in the test updated consistently
• No changes to test logic or production code
• Targeted fix for specific test flakiness identified in issue Flaky CI: LCM RPC tests timeout intermittently #1381

Confidence Score: 5/5

• This PR is safe to merge with minimal risk - it only adjusts test timeout configuration
• Simple, targeted fix that increases test timeout to address CI flakiness; no production code changes, no logical changes to test behavior
• No files require special attention

Important Files Changed

Filename	Overview
dimos/protocol/rpc/test_spec.py	Increased RPC timeout from 2.0s to 5.0s in test_exception_handling_sync to address CI flakiness

_{Last reviewed commit: 492df1a}

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