Update rugged requirement from 1.4.2 to 1.6.3

[dependabot]

Updates the requirements on rugged to permit the latest version.

Changelog

Sourced from rugged's changelog.

• Add Rugged::Repository#checkout_index.

  This allows to perform checkout from a given GIT index. It might be handy in case of manual merge conflicts resolution with user intervention.

  Dmytro Milinevskyy

• Add accessors for the Repository ident.

  Added Repository#ident and Repository#ident= to read and set the identity that is used when writing reflog entries.

  Arthur Schreiber

• Rugged::Remote instances are now immutable.

  • Remote#clear_refspecs and Remote#save were removed without replacement.

  • Remote#url= and Remote#push_url= were removed and replaced by RemoteCollection#set_url and RemoteCollection#set_push_url.

  • Remote#add_push and Remote#add_fetch were removed and replaced by RemoteCollection#add_push_refspec and RemoteCollection#add_fetch_refspec.

  Arthur Schreiber

• Update bundled libgit2 to 9042693e283f65d9afb4906ed693a862a250664b.

  Arthur Schreiber

• Updated the API of reflog modifying methods.

  This removes both the optional :message as well as :signature options from the following methods:

  • BranchCollection#create, BranchCollection#move, BranchCollection#rename
  • ReferenceCollection#create, ReferenceCollection#rename
  • Remote#push
  • Repository#reset

  Additionally, the :signature option from Remote#fetch was removed as well.

  The reflog message is now automatically generated and committed with the the identity that is set in the Repository's configuration.

  Arthur Schreiber

• The :safe_create flag was removed from Repository#checkout_tree.

... (truncated)

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