dep: bump rake-compiler-dock to v1.7.0

Author: flavorjones

Gemfile

@@ -6,7 +6,7 @@ group :development do
   gem "minitest", "5.25.4"
 
   gem "rake-compiler", "1.2.8"
-  gem "rake-compiler-dock", "1.7.0.rc1"
+  gem "rake-compiler-dock", "1.7.0"
 
   gem "ruby_memcheck", "3.0.0" if Gem::Platform.local.os == "linux"