parse_quote_spanned macro name-collides with syn::parse_quote_spanned

[KiChjang]

Per title, this is the error that gets generated while trying to upgrade to syn 1.0.85:

error[E0659]: `parse_quote_spanned` is ambiguous (`macro_rules` vs non-`macro_rules` from other module)
   --> /usr/local/cargo/registry/src/github.com-1ecc6299db9ec823/pin-project-internal-0.4.27/src/pin_project/derive.rs:865:67
    |
865 |                 proj_generics.make_where_clause().predicates.push(parse_quote_spanned! { span =>
    |                                                                   ^^^^^^^^^^^^^^^^^^^ ambiguous name
    |
note: `parse_quote_spanned` could refer to the macro defined here
   --> /usr/local/cargo/registry/src/github.com-1ecc6299db9ec823/pin-project-internal-0.4.27/src/utils.rs:22:1
    |
22  | / macro_rules! parse_quote_spanned {
23  | |     ($span:expr => $($tt:tt)*) => {
24  | |         syn::parse2(quote::quote_spanned!($span => $($tt)*)).unwrap_or_else(|e| panic!("{}", e))
25  | |     };
26  | | }
    | |_^
note: `parse_quote_spanned` could also refer to the macro imported here
   --> /usr/local/cargo/registry/src/github.com-1ecc6299db9ec823/pin-project-internal-0.4.27/src/pin_project/derive.rs:7:5
    |
7   |     *,
    |     ^
    = help: use `self::parse_quote_spanned` to refer to this macro unambiguously

[taiki-e]

Duplicate of #337. Please read #335 and #337 (comment)