[roll third_party/pigweed] pw_ide: Enable cmake.format.allowOptionalArgumentIndentation

Keeps indenting style consistent for cmake files with current.

Test: `pw ide sync` adds entry. Format Document with entry properly
indents lines in CMakeLists.txt.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/203638

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 1154ff5dda14d5d..6913460a9bd1bd6
Roller-URL: https://ci.chromium.org/b/8750536166616174401
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I0978db65468157d0c8bfccf8264e5bd030d53e4b
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/203639
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 1154ff5..6913460 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 1154ff5dda14d5d45fa9797c14014cebf82e1025
+Subproject commit 6913460a9bd1bd66b653a02759dcd8a334807fca