Increase the timeout on dictionary tests to accommodate slower machines.

--- netsurf-3.6/test/hashtable.c
+++ netsurf-3.6/test/hashtable.c
@@ -286,6 +286,7 @@
 	tcase_add_checked_fixture(tc_dict_s,
 				  dicts_hashtable_create,
 				  dict_hashtable_teardown);
+	tcase_set_timeout(tc_dict_s, 30);
 
 	tcase_add_test(tc_dict_s, hashtable_dict_test);
 
@@ -297,6 +298,7 @@
 	tcase_add_checked_fixture(tc_dict_l,
 				  dictl_hashtable_create,
 				  dict_hashtable_teardown);
+	tcase_set_timeout(tc_dict_l, 30);
 
 	tcase_add_test(tc_dict_l, hashtable_dict_test);
 
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<tr><td><span title='2023-09-18 22:12:39 +0200'>2023-09-18</span></td><td><a href='/guix/commit/manifest.scm?id=7bf12820f61179900f9d1f753acf91fd33724976'>maint: Support `guix shell' in Guix's git archive with manifest.scm.</a><span class='msg-avail'>...<span class='msg-tooltip'>* manifest.scm: New file.
* Makefile.am (EXTRA_DIST): Add it.
* doc/contributing.texi (Building from Git): Mention using it.
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