[third_party/pigweed] Roll 2 commits

3950de4195d7606 pw_bytes: Use c++20-friendly pointer operations on
e89e39267e07ab5 pw_bloat: Don't use compound assignment on volatil

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: c7b556c471a4a76..3950de4195d7606
Roller-URL: https://ci.chromium.org/b/8810726604291819153
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8810726604291819153
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ic0d3452ed5e4c8675331ccc4b22dd464578740bd
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/99061
Commit-Queue: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
Bot-Commit: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index c7b556c..3950de4 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit c7b556c471a4a76bda1b1f073392598dae043982
+Subproject commit 3950de4195d7606a741e7d0c89e9d01058900652