Update WebRTC code version (2022-10-02T04:06:36).

Bug: None
Change-Id: I1186f91fc9b0f2c6dcb24bc7938814e46c7ab673
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/277618
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@{#38267}

call/version.cc

diff --git a/call/version.cc b/call/version.cc
index c41c075..0602320 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 2022-09-30T04:11:14";
+const char* const kSourceTimestamp = "WebRTC source stamp 2022-10-02T04:06:36";
 
 void LoadWebRTCVersionInRegister() {
   // Using volatile to instruct the compiler to not optimize `p` away even