Update rails manifest file with updated commit id

Leveraging the result from generate-stackbrew-library.sh script in the
rails repo.

library/rails

@@ -1,8 +1,8 @@
 # maintainer: InfoSiftr <[email protected]> (@infosiftr)
 
-4.2.6: git://github.com/docker-library/rails@09ca1187b57df26d1ba3fb04874806bdd47109f8
-4.2: git://github.com/docker-library/rails@09ca1187b57df26d1ba3fb04874806bdd47109f8
-4: git://github.com/docker-library/rails@09ca1187b57df26d1ba3fb04874806bdd47109f8
-latest: git://github.com/docker-library/rails@e9f8feb3addfd9b33f66384030191faf057a8721
+4.2.6: git://github.com/docker-library/rails@04006011344175c10b6864193eee74d626b84b11
+4.2: git://github.com/docker-library/rails@04006011344175c10b6864193eee74d626b84b11
+4: git://github.com/docker-library/rails@04006011344175c10b6864193eee74d626b84b11
+latest: git://github.com/docker-library/rails@04006011344175c10b6864193eee74d626b84b11
 
-onbuild: git://github.com/docker-library/rails@9fb5d2b7e0f2e7029855028e07e86ab7ec54abaa onbuild
+onbuild: git://github.com/docker-library/rails@9df9b5e6b1519faf22e1565c2caaebf7cc1c665b onbuild