Updates a global repository template.

the template repository; just pass its repository ID, e.g., { "id" : 1 } OR project key and repository slug, e.g. { "project" : { "key" : "PROJECT_1" }, "slug" : "rep_1" }

the template repository; just pass its repository ID, e.g., { "id" : 1 } OR project key and repository slug, e.g. { "project" : { "key" : "PROJECT_1" }, "slug" : "rep_1" }