Update WebRTC code version (2024-08-21T04:04:12).

Bug: None
Change-Id: Iada282369fe98dd6782babbd52ab4f8df8db877d
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/359930
Bot-Commit: webrtc-version-updater@webrtc-ci.iam.gserviceaccount.com <webrtc-version-updater@webrtc-ci.iam.gserviceaccount.com>
Commit-Queue: webrtc-version-updater@webrtc-ci.iam.gserviceaccount.com <webrtc-version-updater@webrtc-ci.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#42817}
diff --git a/call/version.cc b/call/version.cc
index 2a9b6ff..1fb712e 100644
--- a/call/version.cc
+++ b/call/version.cc
@@ -13,7 +13,7 @@
 namespace webrtc {
 
 // The timestamp is always in UTC.
-const char* const kSourceTimestamp = "WebRTC source stamp 2024-08-19T04:06:43";
+const char* const kSourceTimestamp = "WebRTC source stamp 2024-08-21T04:04:12";
 
 void LoadWebRTCVersionInRegister() {
   // Using volatile to instruct the compiler to not optimize `p` away even