[gtksourceview] Update POTFILES.skip

[Piotr Drąg <piotrdrag src gnome org>]

commit 3c25206c2e647295aa7840402019d279802dba6c
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sat Mar 20 14:10:28 2021 +0100

    Update POTFILES.skip

 po/POTFILES.skip | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/po/POTFILES.skip b/po/POTFILES.skip
index 93b52ad1..d45b3c56 100644
--- a/po/POTFILES.skip
+++ b/po/POTFILES.skip
@@ -148,6 +148,7 @@ data/language-specs/systemverilog.lang
 data/language-specs/t2t.lang
 data/language-specs/tcl.lang
 data/language-specs/tera.lang
+data/language-specs/terraform.lang
 data/language-specs/texinfo.lang
 data/language-specs/thrift.lang
 data/language-specs/toml.lang