Add sig to dependency injection containers

[JamieMagee]

Related to #7782

[Nishnha]

It might be a good idea to create a package_manager enum for type hinting? I don't think we have a canonical list in Dependabot Core outside of

dependabot-core/updater/lib/dependabot/updater.rb

Lines 14 to 31 in 1b6f1e4

	# Ecosystems
	require "dependabot/python"
	require "dependabot/terraform"
	require "dependabot/elm"
	require "dependabot/docker"
	require "dependabot/git_submodules"
	require "dependabot/github_actions"
	require "dependabot/composer"
	require "dependabot/nuget"
	require "dependabot/gradle"
	require "dependabot/maven"
	require "dependabot/hex"
	require "dependabot/cargo"
	require "dependabot/go_modules"
	require "dependabot/npm_and_yarn"
	require "dependabot/bundler"
	require "dependabot/pub"
	require "dependabot/swift"

[jakecoffman]

Looks good!

@Nishnha The updater only calls method on the base so I don't think that's necessary?

[JamieMagee]

I think a package manager enum is a good idea, but I'm focusing on adding sigs and less on general refactoring

[jakecoffman]

Starting to deploy this now.