Update rust prebuilt version to 1.56.1p1

Respin rust point release 1.56.1p1 with cherry-pick of
https://reviews.llvm.org/D104556 (needed for Rust coverage).

Bug: https://issuetracker.google.com/issues/206980172
Test: m rust
Change-Id: Ib63a7d8128c86ae9291c4f5275726cfc3bc15f48
diff --git a/rust/config/global.go b/rust/config/global.go
index ebddb75..d3826ac 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 = "1.56.1"
+	RustDefaultVersion = "1.56.1p1"
 	RustDefaultBase    = "prebuilts/rust/"
 	DefaultEdition     = "2018"
 	Stdlibs            = []string{