patch 8.2.1920: listlbr test fails when run after another test

Problem:    Listlbr test fails when run after another test.
Solution:   Add test separately to list of test targets.
diff --git a/src/testdir/Make_all.mak b/src/testdir/Make_all.mak
index 8568824..364221f 100644
--- a/src/testdir/Make_all.mak
+++ b/src/testdir/Make_all.mak
@@ -416,6 +416,7 @@
 	test_listdict.res \
 	test_listener.res \
 	test_listlbr.res \
+	test_listlbr_utf8.res \
 	test_lua.res \
 	test_makeencoding.res \
 	test_man.res \
diff --git a/src/testdir/test_alot_utf8.vim b/src/testdir/test_alot_utf8.vim
index 11de055..77f5ede 100644
--- a/src/testdir/test_alot_utf8.vim
+++ b/src/testdir/test_alot_utf8.vim
@@ -6,7 +6,6 @@
 
 source test_charsearch_utf8.vim
 source test_expr_utf8.vim
-source test_listlbr_utf8.vim
 source test_mksession_utf8.vim
 source test_regexp_utf8.vim
 source test_source_utf8.vim