roll: third_party/pigweed 56bbb09..8f61e66 (3 commits)

8f61e66:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/449292 pw_ide: Add Rust code intelligence documentation for Bazel
6f0aac3:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/452572 pw_kernel: Include system_image .elf & .bin in test runfiles
4db3263:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/446694 docs: Update documentation for the pw_interrupt backends

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 56bbb099ae8948..8f61e66869029a
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8673811374953835793
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ic0aa01c83831153ada6ad6edb315767f6ee2fdd7
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/452693
diff --git a/third_party/pigweed b/third_party/pigweed
index 56bbb09..8f61e66 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 56bbb099ae894835d3347592694caa33398ba170
+Subproject commit 8f61e66869029a8f9ebc19b9c13e595698e5c0ca