Update WebRTC code version (2025-03-28T04:06:09).

Bug: None
Change-Id: I537ab365bd161fa3b6bbb34974434269a8c6bc1c
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/383363
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@{#44253}
diff --git a/call/version.cc b/call/version.cc
index 0c1e9fe..29858c7 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 2025-03-27T04:08:39";
+const char* const kSourceTimestamp = "WebRTC source stamp 2025-03-28T04:06:09";
 
 void LoadWebRTCVersionInRegister() {
   // Using volatile to instruct the compiler to not optimize `p` away even