[roll third_party/pigweed] Add packet.proto as a static_lib for Java lib

static_lib ensures that the code is included as part of the library
whereas "libs" only includes that code as part of the classpath.

Original-Bug: b/210138227
Test: CHQTS
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/78320

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 02e20c8728b9aeb..16c0d6727b6086e
Roller-URL: https://ci.chromium.org/b/8825215436186663745
Cq-Cl-Tag: roller-builder:pigweed-sample-project-roller
Cq-Cl-Tag: roller-bid:8825215436186663745
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I9797c6e3de0d11f921cd5548e3a2062788adb348
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/sample_project/+/78340
Bot-Commit: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
Commit-Queue: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 02e20c8..16c0d67 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 02e20c8728b9aeb07f2abbf07cbf4bc644a8da34
+Subproject commit 16c0d6727b6086eb5ffee18d195f54d608f786a8