[gtksourceview] Update POTFILES.skip

[Piotr Drąg <piotrdrag src gnome org>]

commit 72f03c9637fe94002b5c921e5b2067d0cc64b8fa
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sat Jan 29 14:07:55 2022 +0100

    Update POTFILES.skip

 po/POTFILES.skip | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/po/POTFILES.skip b/po/POTFILES.skip
index d75f202e..01cfdfc0 100644
--- a/po/POTFILES.skip
+++ b/po/POTFILES.skip
@@ -4,6 +4,8 @@ tests/test-completion.ui
 tests/test-scheme.xml
 tests/test-search.ui
 tests/test-widget.ui
+testsuite/testsuite-2.lang
+testsuite/testsuite.lang
 data/language-specs/abnf.lang
 data/language-specs/actionscript.lang
 data/language-specs/ada.lang