Update WebRTC code version (2023-12-26T04:13:22).

Bug: None
Change-Id: I34887c20f1525ce090ed1701b842f2f0d98774c3
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/332467
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@{#41448}
diff --git a/call/version.cc b/call/version.cc
index d18f0f4..88108d0 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 2023-12-25T04:07:54";
+const char* const kSourceTimestamp = "WebRTC source stamp 2023-12-26T04:13:22";
 
 void LoadWebRTCVersionInRegister() {
   // Using volatile to instruct the compiler to not optimize `p` away even