update libapt-{pkg,inst} symbols files

debian/libapt-inst2.0.symbols

@@ -1,6 +1,7 @@
 libapt-inst.so.2.0 libapt-inst2.0 #MINVER#
 * Build-Depends-Package: libapt-pkg-dev
  (c++)"ExtractTar::Done(bool)@APTINST_2.0" 0.8.0
+ (c++)"ExtractTar::Done()@APTINST_2.0" 1.1~exp12
  (c++)"ExtractTar::Go(pkgDirStream&)@APTINST_2.0" 0.8.0
  (c++)"ExtractTar::StartGzip()@APTINST_2.0" 0.8.0
  (c++)"ExtractTar::ExtractTar(FileFd&, unsigned long long, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)@APTINST_2.0" 1.0.5