Upgrade rust/crates/async-trait to 0.1.48

Test: make
Change-Id: I898f35cd086b1bd9952eba11d5d59d31f78a5d16
diff --git a/Cargo.toml.orig b/Cargo.toml.orig
index ea0f3d4..d5599b1 100644
--- a/Cargo.toml.orig
+++ b/Cargo.toml.orig
@@ -1,6 +1,6 @@
 [package]
 name = "async-trait"
-version = "0.1.42"
+version = "0.1.48"
 authors = ["David Tolnay <[email protected]>"]
 edition = "2018"
 license = "MIT OR Apache-2.0"
@@ -15,7 +15,7 @@
 [dependencies]
 proc-macro2 = "1.0"
 quote = "1.0"
-syn = { version = "1.0", features = ["full", "visit-mut"] }
+syn = { version = "1.0.61", features = ["full", "visit-mut"] }
 
 [dev-dependencies]
 rustversion = "1.0"