AU: 1 updated - youtube-dl

[skip ci] https://gist.github.com/a14b1e5bfaf70839b338eb1ab7f8226f/82dae89b8616a12b81e128531d25628fa436080b

automatic/youtube-dl/legal/VERIFICATION.txt

@@ -5,12 +5,12 @@ in verifying that this package's contents are trustworthy.
 The installer have been downloaded from their official download link listed on <https://github.com/rg3/youtube-dl/releases/latest>
 and can be verified like this:
 
-1. Download <https://github.com/rg3/youtube-dl/releases/download/2018.01.18/youtube-dl.exe>
+1. Download <https://github.com/rg3/youtube-dl/releases/download/2018.01.21/youtube-dl.exe>
 2. Then use one of the following methods to obtain the checksum
   - Use powershell function 'Get-Filehash'
   - Use chocolatey utility 'checksum.exe'
 
   checksum type: sha512
-  checksum: 4f0da7589f483e8172e9adfa0e01b4ee9daff94ebc9967820d7ba29f1d3eb3b610c5f3bf8ed3b299c2ca2d45550d97a9ab10b22ef9c4b0a2f7861b58b749724c
+  checksum: a7fb97512b55f606eebcb7f722fc557261adf852e781b6c5fe3091fbb9ef0c95ba072b89d7592a8f5707e2cebecda175b04ebf273a32ef6550223c5a27ae6e0c
 
 File 'LICENSE.txt' is obtained from <https://github.com/rg3/youtube-dl/blob/b7769a05eca3611e492f7a75f1c40cddd2019ef1/LICENSE>

automatic/youtube-dl/youtube-dl.nuspec

@@ -3,7 +3,7 @@
 <package xmlns="http://schemas.microsoft.com/packaging/2010/07/nuspec.xsd">
   <metadata>
     <id>youtube-dl</id>
-    <version>2018.01.18</version>
+    <version>2018.01.21</version>
     <title>youtube-dl</title>
     <owners>chocolatey</owners>
     <authors>Ricardo Garcia and others</authors>