[julia] Update startup.jl to define REPL as local variable.

.julia/config/startup.jl

@@ -1,5 +1,5 @@
 if Base.isinteractive() &&
-   (REPL = get(Base.loaded_modules, Base.PkgId(Base.UUID("3fa0cd96-eef1-5676-8a61-b3b8758bbffb"), "REPL"), nothing); REPL !== nothing)
+   (local REPL = get(Base.loaded_modules, Base.PkgId(Base.UUID("3fa0cd96-eef1-5676-8a61-b3b8758bbffb"), "REPL"), nothing); REPL !== nothing)
 
     # Exit Julia with :q
     pushfirst!(REPL.repl_ast_transforms, function(ast::Union{Expr,Nothing})