Version 8.9.255.12

TBR=v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com

Change-Id: I59a2b3168402af65a6ad1238193aa4db5eb8ed89
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2659095
Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/branch-heads/8.9@{#26}
Cr-Branched-From: 16b9bbbd581c25391981aa03180b76aa60463a3e-refs/heads/8.9.255@{#1}
Cr-Branched-From: d16a2a688498bd1c3e6a49edb25d8c4ca56232dc-refs/heads/master@{#72039}
diff --git a/include/v8-version.h b/include/v8-version.h
index 84a3af2..aa2710a 100644
--- a/include/v8-version.h
+++ b/include/v8-version.h
@@ -11,7 +11,7 @@
 #define V8_MAJOR_VERSION 8
 #define V8_MINOR_VERSION 9
 #define V8_BUILD_NUMBER 255
-#define V8_PATCH_LEVEL 11
+#define V8_PATCH_LEVEL 12
 
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)