[roll third_party/pigweed] emboss: Loosen Emboss cmake dependency tracking
This change loosens the emboss cmake dependency tracking to allow
parallel header generation of all emboss headers. Previously a
dependency on the `emboss_hci_common` target would block code generation
until that target was fully generated. `embossc` doesn't actually
require this and instead we can simply track dependencies on changes to
the `emb` files themselves.
Test:
```
ninja -C out/cmake_host pw_bluetooth.emboss_hci_events._generate
ninja -C out/cmake_host pw_bluetooth.emboss_hci_events._generate
touch pw_bluetooth/public/pw_bluetooth/hci_common.emb
ninja -C out/cmake_host pw_bluetooth.emboss_hci_events._generate
```
Original-Bug: 333735460
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/202831
https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 23691711b80943a..69ee1ccf3ef5680
Roller-URL: https://ci.chromium.org/b/8750842013049097233
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I9da79fc2f5b6fa76fc77708db6ec0537f7adf953
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/203190
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 2369171..69ee1cc 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 23691711b80943ada28bc9c805ee6ad3ded88387
+Subproject commit 69ee1ccf3ef56802f3b53700bae79768f6a6f519
