Update WebRTC code version (2023-05-26T04:05:22).

Bug: None
Change-Id: I58386cbd11674ce3213223639c3ad43ab4930d47
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/306585
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@{#40150}
diff --git a/call/version.cc b/call/version.cc
index 6e4ac5a..c3f67e5 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 2023-05-25T04:12:48";
+const char* const kSourceTimestamp = "WebRTC source stamp 2023-05-26T04:05:22";
 
 void LoadWebRTCVersionInRegister() {
   // Using volatile to instruct the compiler to not optimize `p` away even