Remove xcconfigs from template Copy Bundle Resources build phases (#38724)

https://dart.googlesource.com/external/github.com/flutter/flutter/+/4d81b0c9708f57e545e96f0e6817f5eab3fc68ee
diff --git a/commits.json b/commits.json
index 4b09ac9..bc21ae0 100644
--- a/commits.json
+++ b/commits.json
@@ -1,5 +1,5 @@
 {
   "external/github.com/flutter/engine":"99ee3c2b0df7911baa390fa897cefc836605d154",
-  "external/github.com/flutter/flutter":"324fe201b0231fcc39fff8c99fee1b22425c4bc0",
+  "external/github.com/flutter/flutter":"4d81b0c9708f57e545e96f0e6817f5eab3fc68ee",
   "sdk":"5087b993610ec8125a1f594617e9fa8d64ecc510"
 }
\ No newline at end of file