roll: third_party/pigweed pw_transfer: Add Number() coercion for 64-bit int proto field access

The internal JSPB implementation is migrating 64-bit int fields to a
new bigint|string type. This change adds a defensive coercion to
ensure the value remains number-typed.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/281833
Original-Revision: 64d06ced56dd4dfa435541a10fd157b621e22673

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 2452fa9903c157..64d06ced56dd4d
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8718177206851919233
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I65c41620298010ddb48d6e2a3deeb5924b0eda97
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/kudzu/+/281744
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
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 2452fa9..64d06ce 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 2452fa9903c157b1964cbd81452d9e0be49641b3
+Subproject commit 64d06ced56dd4dfa435541a10fd157b621e22673