Update WebRTC code version (2023-01-23T04:11:41).

Bug: None
Change-Id: I83b8dd0c10f3429f19a8487fccfa06c4448f99fc
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/291294
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@{#39169}
diff --git a/call/version.cc b/call/version.cc
index f91e6ec..9e08d37 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 2023-01-20T04:01:58";
+const char* const kSourceTimestamp = "WebRTC source stamp 2023-01-23T04:11:41";
 
 void LoadWebRTCVersionInRegister() {
   // Using volatile to instruct the compiler to not optimize `p` away even