Switch gcc dependenency to gcc-libs

pkg.info

@@ -1,8 +1,9 @@
 name: unittest-cpp
 description: A lightweight unit testing framework for C++
 version: 2.0.0
+revision: 2
 url: https://github.com/unittest-cpp/unittest-cpp
 license: MIT
 architecture: any
-depends: ["gcc"]
+depends: ["gcc-libs"]
 type: source