Update go.sum with new theme (#948)

chore: Update go.sum with new theme

Author: lamATnginx

go.sum

@@ -1,2 +1,2 @@
-github.com/nginxinc/nginx-hugo-theme v0.43.6 h1:G9flRI3mMsETE5QHNXQ8ozesJvlRM9qBlrkzYHgZrdc=
-github.com/nginxinc/nginx-hugo-theme v0.43.6/go.mod h1:DPNgSS5QYxkjH/BfH4uPDiTfODqWJ50NKZdorguom8M=
+github.com/nginxinc/nginx-hugo-theme v0.43.7 h1:GQTeoszoPJV8oYycAxt0qvOYwlP28uZe6oDOCiLi9Dk=
+github.com/nginxinc/nginx-hugo-theme v0.43.7/go.mod h1:DPNgSS5QYxkjH/BfH4uPDiTfODqWJ50NKZdorguom8M=