Rebuild for vala introspection generation regression

vala 0.48.8 that was used in the mass rebuild regressed introspection
generation.

https://gitlab.gnome.org/GNOME/vala/-/issues/1059

tracker.spec

@@ -8,7 +8,7 @@
 
 Name:           tracker
 Version:        2.3.4
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Desktop-neutral metadata database and search tool
 
 License:        GPLv2+
@@ -197,6 +197,9 @@ rm -rf $RPM_BUILD_ROOT%{_libdir}/tracker-2.0/trackertestutils/
 
 
 %changelog
+* Wed Aug 19 2020 Kalev Lember <klember@redhat.com> - 2.3.4-4
+- Rebuild for vala introspection generation regression
+
 * Wed Jul 29 2020 Fedora Release Engineering <releng@fedoraproject.org> - 2.3.4-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild