Tests

Bump third_party/pigweed/repo from `0380161` to `a2c5384` #391

Job	Run time
REPL Tests - Linux	35m 20s
REPL Tests - Darwin	0s
Test Suites - Darwin (no-ble-asan-clang)	1h 17m 14s
Test Suites - Linux (no-ble-tsan-clang)	1h 46m 11s
Test Suites - Darwin (no-ble-tsan-clang)	2h 22m 16s
	6h 1m 1s

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