SimpleRowFormatter.h: fix the build on gcc-15 (unsatisfied noexcept)

On today's `gcc-15` poco fails to build as:

    In file included from /build/source/Data/include/Poco/Data/Statement.h:27,
                     from /build/source/Data/include/Poco/Data/Session.h:23,
                     from /build/source/Data/include/Poco/Data/ArchiveStrategy.h:22,
                     from /build/source/Data/src/ArchiveStrategy.cpp:15:
    /build/source/Data/include/Poco/Data/SimpleRowFormatter.h:114:21: error: declaration of 'std::_Require<std::__not_<std::__is_tuple_like<_Tp> >, std::is_move_construc
    tible<_Tp>, std::is_move_assignable<_Tp> > std::swap(_Tp&, _Tp&) noexcept [with _Tp = Poco::Data::SimpleRowFormatter; _Require<__not_<__is_tuple_like<_Tp> >, is_move_constructible<_Tp>, is_move_assignable<_Tp> > = void]' has a different exception specifier
      114 |         inline void swap<Poco::Data::SimpleRowFormatter>(Poco::Data::SimpleRowFormatter& s1,
          |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    In file included from /nix/store/...-gcc-15.0.0/include/c++/15.0.0/bits/new_allocator.h:36,
                     from /nix/store/...-gcc-15.0.0/include/c++/15.0.0/x86_64-unknown-linux-gnu/bits/c++allocator.h:33,
                     from /nix/store/...-gcc-15.0.0/include/c++/15.0.0/bits/allocator.h:46,
                     from /nix/store/...-gcc-15.0.0/include/c++/15.0.0/string:43,
                     from /build/source/Foundation/include/Poco/Foundation.h:94,
                     from /build/source/Data/include/Poco/Data/Data.h:23,
                     from /build/source/Data/include/Poco/Data/ArchiveStrategy.h:21:
    /nix/store/...-gcc-15.0.0/include/c++/15.0.0/bits/move.h:214:5: note: from previous declaration 'std::_Require<std::__not_<std::__is_tuple_like<_Tp> >, std::is_move_constructible<_Tp>, std::is_move_assignable<_Tp> > std::swap(_Tp&, _Tp&) noexcept (false) [with _Tp = Poco::Data::SimpleRowFormatter; _Require<__not_<__is_tuple_like<_Tp> >, is_move_constructible<_Tp>, is_move_assignable<_Tp> > = void]'
      214 |     swap(_Tp& __a, _Tp& __b)
          |     ^~~~

Possibly because `SimpleRowFormatter` does not have constructors and
assignment operators that involve rvalue references?

Updated `noexcept` condition. Fixes the build on` gcc-15`. Still
compiles on `gcc-13`.

Author: trofi

Data/include/Poco/Data/SimpleRowFormatter.h

@@ -109,13 +109,10 @@ inline std::streamsize SimpleRowFormatter::getSpacing() const
 
 namespace std
 {
-	// Note: for an unknown reason, clang refuses to compile this function as noexcept
 	template<>
 	inline void swap<Poco::Data::SimpleRowFormatter>(Poco::Data::SimpleRowFormatter& s1,
 		Poco::Data::SimpleRowFormatter& s2)
-#ifndef POCO_COMPILER_CLANG
-		noexcept
-#endif
+		noexcept(std::is_nothrow_swappable_v<Poco::Data::SimpleRowFormatter>)
 		/// Full template specalization of std:::swap for SimpleRowFormatter
 	{
 		s1.swap(s2);