Update WebRTC code version (2023-04-30T04:11:45).

Bug: None
Change-Id: Ibc50fbb0a7cdaeb639726a272e16f9eb90671198
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/303920
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@{#39969}
diff --git a/call/version.cc b/call/version.cc
index 33d2ad7..98b144f 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 2023-04-24T04:05:22";
+const char* const kSourceTimestamp = "WebRTC source stamp 2023-04-30T04:11:45";
 
 void LoadWebRTCVersionInRegister() {
   // Using volatile to instruct the compiler to not optimize `p` away even