Update WebRTC code version (2026-11-15T04:07:22).

Bug: None
Change-Id: Ia71da052e13cf841007f92428f50a196c8d0336f
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/516260
Commit-Queue: webrtc-version-updater@webrtc-ci.iam.gserviceaccount.com <webrtc-version-updater@webrtc-ci.iam.gserviceaccount.com>
Bot-Commit: webrtc-version-updater@webrtc-ci.iam.gserviceaccount.com <webrtc-version-updater@webrtc-ci.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#49264}

call/version.cc

diff --git a/call/version.cc b/call/version.cc
index 3fca383..3d0552e 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 2026-11-14T04:05:05";
+const char* const kSourceTimestamp = "WebRTC source stamp 2026-11-15T04:07:22";
 
 void LoadWebRTCVersionInRegister() {
   // Using volatile to instruct the compiler to not optimize `p` away even