rust: update nom to 5.1.3

Update nom to 5.1.3 which fixes some future breaking changes in the Rust
compiler.

See https://github.com/rust-bakery/nom/pull/1657 for more info.

rust/Cargo.toml.in

@@ -20,7 +20,7 @@ function-macro = []
 decompression = ["flate2", "brotli"]
 
 [dependencies]
-nom = "= 5.1.1"
+nom = "~ 5.1.3"
 bitflags = "~1.2.1"
 byteorder = "1.3"
 uuid = "0.8"