Bump third_party/pigweed/repo from `1f12d06` to `cfcf005` #1251

Job	Run time
Test Suites - Darwin (no-ble-asan-clang)	42s
Test Suites - Darwin (no-ble-tsan-clang)	2m 35s
Test Suites - Linux (no-ble-tsan-clang)	1h 49m 16s
REPL Tests - Darwin	0s
REPL Tests - Linux	1h 29m 48s
	3h 22m 21s

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