Add supported branch chrome/m147, remove chrome/m143

Change-Id: I53cd08c06e1adb51a0f3c1e54fbb4199433e7621
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/1183876
Reviewed-by: Heather Miller <hcm@google.com>

supported-branches.json

diff --git a/supported-branches.json b/supported-branches.json
index a421007..c89e0a8 100644
--- a/supported-branches.json
+++ b/supported-branches.json
@@ -5,10 +5,6 @@
       "owner": "skiabot@google.com"
     },
     {
-      "ref": "refs/heads/chrome/m143",
-      "owner": "hcm@google.com"
-    },
-    {
       "ref": "refs/heads/chrome/m144",
       "owner": "hcm@google.com"
     },
@@ -19,6 +15,10 @@
     {
       "ref": "refs/heads/chrome/m146",
       "owner": "yhkumar@google.com"
+    },
+    {
+      "ref": "refs/heads/chrome/m147",
+      "owner": "anuszel@google.com"
     }
   ]
 }
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