youtube-dl: update to 2021.05.16.

Closes: #30957 [via git-merge-pr]

srcpkgs/youtube-dl/template

@@ -1,6 +1,6 @@
 # Template file for 'youtube-dl'
 pkgname=youtube-dl
-version=2021.04.26
+version=2021.05.16
 revision=1
 wrksrc="${pkgname}"
 build_style=python3-module
@@ -13,7 +13,7 @@ license="Unlicense"
 homepage="https://yt-dl.org"
 changelog="https://raw.githubusercontent.com/ytdl-org/youtube-dl/master/ChangeLog"
 distfiles="${homepage}/downloads/${version}/${pkgname}-${version}.tar.gz"
-checksum=4ccf21f4a0daee0d58bef569c71dd459bd1f629248995b4e4856b6926531ea4a
+checksum=d4012a5ca8d77f8ee30a21532fd1042ed287c0784a5a76fcb74cc33ef76f1afd
 
 do_check() {
 	PYTHON=/usr/bin/python3 make offlinetest