Bump shellexpand from 2.0.0 to 2.1.0 in /packer (#1792)

Summary:
Bumps [shellexpand](https://github.com/netvl/shellexpand) from 2.0.0 to 2.1.0.
<details>
<summary>Commits</summary>
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<li>See full diff in <a href="https://github.com/netvl/shellexpand/commits">compare view</a></li>
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Pull Request resolved: https://github.com/facebook/flipper/pull/1792

Reviewed By: nikoant

Differential Revision: D25782253

Pulled By: passy

fbshipit-source-id: 4499f24365043b1b2f5d30e0f1809d44712cedfe

packer/Cargo.lock

@@ -236,22 +236,21 @@ dependencies = [
 ]
 
 [[package]]
-name = "dirs"
-version = "2.0.2"
+name = "dirs-next"
+version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "13aea89a5c93364a98e9b37b2fa237effbb694d5cfe01c5b70941f7eb087d5e3"
+checksum = "b98cf8ebf19c3d1b223e151f99a4f9f0690dca41414773390fc824184ac833e1"
 dependencies = [
- "cfg-if 0.1.10",
- "dirs-sys",
+ "cfg-if 1.0.0",
+ "dirs-sys-next",
 ]
 
 [[package]]
-name = "dirs-sys"
-version = "0.3.4"
+name = "dirs-sys-next"
+version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "afa0b23de8fd801745c471deffa6e12d248f962c9fd4b4c33787b055599bde7b"
+checksum = "99de365f605554ae33f115102a02057d4fc18b01f3284d6870be0938743cfe7d"
 dependencies = [
- "cfg-if 0.1.10",
  "libc",
  "redox_users",
  "winapi",
@@ -633,11 +632,11 @@ dependencies = [
 
 [[package]]
 name = "shellexpand"
-version = "2.0.0"
+version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a2b22262a9aaf9464d356f656fea420634f78c881c5eebd5ef5e66d8b9bc603"
+checksum = "83bdb7831b2d85ddf4a7b148aa19d0587eddbe8671a436b7bd1182eaad0f2829"
 dependencies = [
- "dirs",
+ "dirs-next",
 ]
 
 [[package]]

packer/Cargo.toml

@@ -11,7 +11,7 @@ edition = "2018"
 
 [dependencies]
 clap = "2.33.3"
-shellexpand = "2.0.0"
+shellexpand = "2.1.0"
 tar = "0.4.30"
 serde = { version = "1.0.118", features = ["derive"] }
 serde_yaml = "0.8.13"