test: update fixtures to use Float32 inputs

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---

Author: anandkaranubc

lib/node_modules/@stdlib/math/base/special/fast/hypotf/test/fixtures/julia/data.json

@@ -38,7 +38,7 @@ julia> gen( x, y, \"data.json\" );
 ```
 """
 function gen( x, y, name )
-	h = hypot.( x, y );
+	h = hypot.( convert( Array{Float32}, x ), convert( Array{Float32}, y ) );
 
 	# Store data to be written to file as a collection:
 	data = Dict([