Skip failing test in 'test_connection_binding_match_tls_unique'
in 'tls/tests/connection.c' when building glib-networking against
GnuTLS 3.7.2.  The failure stems from the fact that
'gnutls_session_channel_binding' returns GNUTLS_E_INVALID_REQUEST
is known upstream:

  https://gitlab.gnome.org/GNOME/glib-networking/-/issues/164

diff --git a/tls/tests/connection.c b/tls/tests/connection.c
index 036df04..347c7a4 100644
--- a/tls/tests/connection.c
+++ b/tls/tests/connection.c
@@ -3037,8 +3037,6 @@ main (int   argc,
               setup_connection, test_connection_missing_server_identity, teardown_connection);
   g_test_add ("/tls/" BACKEND "/connection/peer-certificate-notify", TestConnection, NULL,
               setup_connection, test_peer_certificate_notify, teardown_connection);
-  g_test_add ("/tls/" BACKEND "/connection/binding/match-tls-unique", TestConnection, NULL,
-              setup_connection, test_connection_binding_match_tls_unique, teardown_connection);
   g_test_add ("/tls/" BACKEND "/connection/binding/match-tls-server-end-point", TestConnection, NULL,
               setup_connection, test_connection_binding_match_tls_server_end_point, teardown_connection);
   g_test_add ("/tls/" BACKEND "/connection/binding/match-tls-exporter", TestConnection, NULL,
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<div class='path'>path: <a href='/guix/log/?id=d6104e3b85fe95bc74319df091a85cfb05aa3e4c'>root</a>/<a href='/guix/log/gnu?id=d6104e3b85fe95bc74319df091a85cfb05aa3e4c'>gnu</a>/<a href='/guix/log/gnu/packages?id=d6104e3b85fe95bc74319df091a85cfb05aa3e4c'>packages</a>/<a href='/guix/log/gnu/packages/augeas.scm?id=d6104e3b85fe95bc74319df091a85cfb05aa3e4c'>augeas.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/augeas.scm?id=d6104e3b85fe95bc74319df091a85cfb05aa3e4c&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-04-16 19:42:20 +0200'>2020-04-16</span></td><td><a href='/guix/commit/gnu/packages/augeas.scm?id=9fcd4ef30bd17d6ab66d7ee14d2e74081efcfb29'>gnu: augeas: Use HTTPS home page.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/augeas.scm (augeas)[home-page]: Use HTTPS.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2020-04-16 19:42:20 +0200'>2020-04-16</span></td><td><a href='/guix/commit/gnu/packages/augeas.scm?id=53b655727e4acb55f4174cbe9101f032453dba95'>gnu: augeas: Update to 1.12.0.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/augeas.scm (augeas): Update to 1.12.0.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>