[version.syn] Bump __cpp_lib_apply FTM and add it to <type_traits>

Author: tkoeppe

source/support.tex

@@ -578,7 +578,7 @@
   // freestanding, also in \libheader{memory}, \libheader{scoped_allocator}, \libheader{string}, \libheader{deque}, \libheader{forward_list}, \libheader{list},
   // \libheader{vector}, \libheader{map}, \libheader{set}, \libheader{unordered_map}, \libheader{unordered_set}
 #define @\defnlibxname{cpp_lib_any}@                               201606L // also in \libheader{any}
-#define @\defnlibxname{cpp_lib_apply}@                             201603L // freestanding, also in \libheader{tuple}
+#define @\defnlibxname{cpp_lib_apply}@                             202506L // freestanding, also in \libheader{tuple}, \libheader{type_traits}
 #define @\defnlibxname{cpp_lib_array_constexpr}@                   201811L // also in \libheader{iterator}, \libheader{array}
 #define @\defnlibxname{cpp_lib_as_const}@                          201510L // freestanding, also in \libheader{utility}
 #define @\defnlibxname{cpp_lib_associative_heterogeneous_erasure}@ 202110L