roll: pigweed, pw_toolchain: pw_transfer: Don't block indefinitely on events

This adds a new configuration option to pw_transfer which adjusts how
long incoming transfer events should block on the previous event being
processed before dropping the new event. The default is set to the
configured transfer timeout, replacing the previous behavior of blocking
indefinitely.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/224693
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>

https://pigweed.googlesource.com/pigweed/pigweed
pigweed, pw_toolchain Rolled-Commits: 9a827f5f037f6b0..f6c4828aa0db15b
Roller-URL: https://ci.chromium.org/b/8741953612684823713
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ibff0c34735cf9457c1df779a9fe65e0a0ed8e644
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/quickstart/bazel/+/224951
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/WORKSPACE b/WORKSPACE
index 6ccd6fe..aaf2ef9 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -84,8 +84,8 @@
     name = "pigweed",
     # ROLL: Warning: this entry is automatically updated.
     # ROLL: Last updated 2024-07-19.
-    # ROLL: By https://cr-buildbucket.appspot.com/build/8741954027001887233.
-    commit = "9a827f5f037f6b0f25f70f8d41ba9341ab7bf231",
+    # ROLL: By https://cr-buildbucket.appspot.com/build/8741953612684823713.
+    commit = "f6c4828aa0db15bc04edadbc87ab1a06b36d78aa",
     remote = "https://pigweed.googlesource.com/pigweed/pigweed.git",
 )
 
@@ -93,8 +93,8 @@
     name = "pw_toolchain",
     # ROLL: Warning: this entry is automatically updated.
     # ROLL: Last updated 2024-07-19.
-    # ROLL: By https://cr-buildbucket.appspot.com/build/8741954027001887233.
-    commit = "9a827f5f037f6b0f25f70f8d41ba9341ab7bf231",
+    # ROLL: By https://cr-buildbucket.appspot.com/build/8741953612684823713.
+    commit = "f6c4828aa0db15bc04edadbc87ab1a06b36d78aa",
     remote = "https://pigweed.googlesource.com/pigweed/pigweed.git",
     strip_prefix = "pw_toolchain_bazel",
 )