Update TEST_MAPPING am: 878d0875e4 am: a6a6fdf32e am: d5ec53c87a am: 50eddb9d32 am: e6f484b8e1

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/regex-automata/+/1806199

Change-Id: I92808f7249ff8c65abb6c9117368890c2003bfab
diff --git a/TEST_MAPPING b/TEST_MAPPING
index 19817ee..05c6d70 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -2,6 +2,15 @@
 {
   "presubmit": [
     {
+      "name": "base64_device_test_tests_decode"
+    },
+    {
+      "name": "base64_device_test_tests_encode"
+    },
+    {
+      "name": "base64_device_test_tests_helpers"
+    },
+    {
       "name": "unicode-xid_device_test_src_lib"
     },
     {