Update WebRTC code version (2025-01-16T04:03:05).

Bug: None
Change-Id: Iaf2b3aebb2066108c69aef91519e70548279cbda
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/374460
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@{#43744}

call/version.cc

diff --git a/call/version.cc b/call/version.cc
index b488875..a864f97 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 2025-01-15T04:05:49";
+const char* const kSourceTimestamp = "WebRTC source stamp 2025-01-16T04:03:05";
 
 void LoadWebRTCVersionInRegister() {
   // Using volatile to instruct the compiler to not optimize `p` away even