roll: third_party/pigweed 116506d..6dac613 (2 commits)

6dac613:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/438994 pw_bluetooth_sapphire: Check callback existence before invoking
7c438d7:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/424534 pw_metric: Refactor Metric for 64-bit support

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 116506db544d22..6dac61326e3147
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8675730292813502801
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I120bc2b2e7994715c38898c26fc4cde4b3e3aa70
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/439112
diff --git a/third_party/pigweed b/third_party/pigweed
index 116506d..6dac613 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 116506db544d2263c7194f5f7433fe1d333a5b7b
+Subproject commit 6dac61326e3147ad995da0978a14b760a557b209