message: remove shellexpand patch and upgrade to 2.1.2
  Summary: Someone kindly took over the ownership of shellexpand and merged the upstream PR. So we no longer need to use the manual patch any more.
diff: @@ -10,7 +10,6 @@ mysql_async = { git = "https://github.com/mzr/mysql_async", rev = "76b6fa05d7bb3
  quickcheck = { git = "https://github.com/jakoschiko/quickcheck", rev = "6ecdf5bb4b0132ce66670b4d46453aa022ea892c" }
  reqwest = { git = "https://github.com/vmagro/reqwest", rev = "f9490c06756a9d35ab874c44657db790a87af80b" }
  rustfilt = { git = "https://github.com/jsgf/rustfilt.git", rev = "8141fa7f1caee562ee8daffb2ddeca3d1f0d36e5" }
  -shellexpand = { git = "https://github.com/fanzeyi/shellexpand.git", rev = "179447a3f8fccd765acfd2eed15a54c716c49cfe" }
  solana-program = { git = "https://github.com/omertxyz/solana.git", rev = "03a3b241622b6248bb245c29baef538a88f04c0b" }
  solana-zk-token-sdk = { git = "https://github.com/omertxyz/solana.git", rev = "03a3b241622b6248bb245c29baef538a88f04c0b" }
  tar = { package = "tar", git = "https://github.com/jrwats/tar-rs.git", rev = "21eeccdc08d9b87f6ad610f9b20a5839aabe5974" }
  