test(tsan): add an exception for tracker_triples_cursor_reset

Unconfirmed, uninstrumented error:

```
WARNING: ThreadSanitizer: unlock of an unlocked mutex (or by a wrong thread) (pid=60215)
    #0 pthread_mutex_unlock <null> (libtsan.so.2+0x5735c) (BuildId: c8455fafa477dccacaa74df59b23caba0427f5bf)
    #1 tracker_triples_cursor_reset <null> (libtracker-sparql-3.0.so.0+0x7eb63) (BuildId: 8ba7590a425a128842dbc8ad9aabd1b97b930743)

  Location is global '<null>' at 0x000000000000 (libsqlite3.so.0+0x15d208)

  Mutex M0 (0x7f090a3d8208) created at:
    #0 pthread_mutex_unlock <null> (libtsan.so.2+0x5735c) (BuildId: c8455fafa477dccacaa74df59b23caba0427f5bf)
    #1 tracker_triples_cursor_reset <null> (libtracker-sparql-3.0.so.0+0x7eb63) (BuildId: 8ba7590a425a128842dbc8ad9aabd1b97b930743)

SUMMARY: ThreadSanitizer: unlock of an unlocked mutex (or by a wrong thread) (/lib64/libtsan.so.2+0x5735c) (BuildId: c8455fafa477dccacaa74df59b23caba0427f5bf) in pthread_mutex_unlock
```

tests/extra/tsan.supp

@@ -29,6 +29,9 @@ called_from_lib:libtasn1
 # See: https://gitlab.gnome.org/GNOME/glib-networking/-/issues/184
 mutex:g_tls_certificate_gnutls_get_type_once
 
+# Unconfirmed: https://gitlab.gnome.org/GNOME/tinysparql/-/issues/new
+mutex:tracker_triples_cursor_reset
+
 # GTK
 called_from_lib:libadwaita-1
 called_from_lib:libcairo.so