control: add ruby, rake as explicit build-dependencies, fix Pirate Praveen's name

debian/control

@@ -2,12 +2,14 @@ Source: ruby-redis
 Section: ruby
 Priority: optional
 Maintainer: Debian Ruby Team <pkg-ruby-extras-maintainers@lists.alioth.debian.org>
-Uploaders: Cédric Pirate Praveen <praveen@debian.org>
+Uploaders: Pirate Praveen <praveen@debian.org>
 Build-Depends: debhelper-compat (= 13),
                gem2deb (>= 1),
                netcat-openbsd,
+               rake,
                redis-server,
                redis-tools,
+               ruby,
                ruby-mocha
 Standards-Version: 4.5.0
 Vcs-Git: https://salsa.debian.org/ruby-team/ruby-redis.git