Update the Rust prebuilt version number to 1.54.0

This CL changes the Rust prebuilt version number from 1.53.0 to 1.54.0.

Test: m rust
Bug: 194812675
Change-Id: Icdbeab414dd39814f060e400cdca1fdb59f4f859
diff --git a/rust/config/global.go b/rust/config/global.go
index c390711..e5b334d 100644
--- a/rust/config/global.go
+++ b/rust/config/global.go
@@ -24,7 +24,7 @@
 var pctx = android.NewPackageContext("android/soong/rust/config")
 
 var (
-	RustDefaultVersion = "1.53.0"
+	RustDefaultVersion = "1.54.0"
 	RustDefaultBase    = "prebuilts/rust/"
 	DefaultEdition     = "2018"
 	Stdlibs            = []string{