[roll third_party/pigweed] pw_ide: Fix clangd path on Windows

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/171099

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 2f6d0ec3f0a81a1..8a618cbb8f45ea7
Roller-URL: https://ci.chromium.org/b/8769480229266772385
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I7ab7bd6d9e18b9712a74809ec572cc51310d6fdd
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/171883
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 2f6d0ec..8a618cb 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 2f6d0ec3f0a81a1da1f5b24680de0798631049c5
+Subproject commit 8a618cbb8f45ea7c1c19c97a8838e96088770333