Roll ToTiOS clang bots to 13.3.

Change-Id: I2cd296f3a8b4e0af505331200ef9cbb531ada878
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2079171
Auto-Submit: Justin Cohen <justincohen@chromium.org>
Reviewed-by: Gauthier Ambard <gambard@chromium.org>
Commit-Queue: Justin Cohen <justincohen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#745465}

ios/build/bots/chromium.clang/ToTiOS.json

@@ -24,119 +24,119 @@
       "device type": "iPhone 6s",
       "host os": "Mac-10.14.6",
       "pool": "chromium.tests",
-      "os": "12.4"
+      "os": "13.3"
     },
     {
       "app": "boringssl_crypto_tests",
       "device type": "iPhone 6s",
       "host os": "Mac-10.14.6",
       "pool": "chromium.tests",
-      "os": "12.4"
+      "os": "13.3"
     },
     {
       "app": "boringssl_ssl_tests",
       "device type": "iPhone 6s",
       "host os": "Mac-10.14.6",
       "pool": "chromium.tests",
-      "os": "12.4"
+      "os": "13.3"
     },
     {
       "app": "components_unittests",
       "device type": "iPhone 6s",
       "host os": "Mac-10.14.6",
       "pool": "chromium.tests",
-      "os": "12.4"
+      "os": "13.3"
     },
     {
       "app": "crypto_unittests",
       "device type": "iPhone 6s",
       "host os": "Mac-10.14.6",
       "pool": "chromium.tests",
-      "os": "12.4"
+      "os": "13.3"
     },
     {
       "app": "gfx_unittests",
       "device type": "iPhone 6s",
       "host os": "Mac-10.14.6",
       "pool": "chromium.tests",
-      "os": "12.4"
+      "os": "13.3"
     },
     {
       "app": "google_apis_unittests",
       "device type": "iPhone 6s",
       "host os": "Mac-10.14.6",
       "pool": "chromium.tests",
-      "os": "12.4"
+      "os": "13.3"
     },
     {
       "app": "ios_chrome_unittests",
       "device type": "iPhone 6s",
       "host os": "Mac-10.14.6",
       "pool": "chromium.tests",
-      "os": "12.4"
+      "os": "13.3"
     },
     {
       "app": "ios_net_unittests",
       "device type": "iPhone 6s",
       "host os": "Mac-10.14.6",
       "pool": "chromium.tests",
-      "os": "12.4"
+      "os": "13.3"
     },
     {
       "app": "ios_web_inttests",
       "device type": "iPhone 6s",
       "host os": "Mac-10.14.6",
       "pool": "chromium.tests",
-      "os": "12.4"
+      "os": "13.3"
     },
     {
       "app": "ios_web_unittests",
       "device type": "iPhone 6s",
       "host os": "Mac-10.14.6",
       "pool": "chromium.tests",
-      "os": "12.4"
+      "os": "13.3"
     },
     {
       "app": "ios_web_view_inttests",
       "device type": "iPhone 6s",
       "host os": "Mac-10.14.6",
       "pool": "chromium.tests",
-      "os": "12.4"
+      "os": "13.3"
     },
     {
       "app": "net_unittests",
       "device type": "iPhone 6s",
       "host os": "Mac-10.14.6",
       "pool": "chromium.tests",
-      "os": "12.4"
+      "os": "13.3"
     },
     {
       "app": "skia_unittests",
       "device type": "iPhone 6s",
       "host os": "Mac-10.14.6",
       "pool": "chromium.tests",
-      "os": "12.4"
+      "os": "13.3"
     },
     {
       "app": "sql_unittests",
       "device type": "iPhone 6s",
       "host os": "Mac-10.14.6",
       "pool": "chromium.tests",
-      "os": "12.4"
+      "os": "13.3"
     },
     {
       "app": "ui_base_unittests",
       "device type": "iPhone 6s",
       "host os": "Mac-10.14.6",
       "pool": "chromium.tests",
-      "os": "12.4"
+      "os": "13.3"
     },
     {
       "app": "url_unittests",
       "device type": "iPhone 6s",
       "host os": "Mac-10.14.6",
       "pool": "chromium.tests",
-      "os": "12.4"
+      "os": "13.3"
     }
   ]
 }