Update WebRTC code version (2023-05-30T04:02:06).

Bug: None
Change-Id: I5b5f8cc0cd67b19b65dbb89e5fd54c017b65ebcb
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/306913
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@{#40171}
diff --git a/call/version.cc b/call/version.cc
index 8604a67..4e409f5 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 2023-05-29T04:03:50";
+const char* const kSourceTimestamp = "WebRTC source stamp 2023-05-30T04:02:05";
 
 void LoadWebRTCVersionInRegister() {
   // Using volatile to instruct the compiler to not optimize `p` away even