tests: update prettyplease to support modern expressions

Signed-off-by: Benno Lossin <[email protected]>

Author: BennoLossin

Cargo.lock

@@ -31,7 +31,7 @@ libc = "0.2"
 trybuild = { version = "1.0", features = ["diff"] }
 macrotest = "1.0"
 # needed for macrotest, have to enable verbatim feature to be able to format `&raw` expressions.
-prettyplease = { version = "0.2", features = ["verbatim"] }
+prettyplease = { version = "0.2.37", features = ["verbatim"] }
 
 [lints.rust]
 non_ascii_idents = "deny"