Ports: Add missing SHA256 hashes to dash and zstd

We don't support hashes from external files (anymore), downloading
another file for integrity validation is pointless. As as result, these
two ports would refuse to build as their hashes were missing.

Fixes #6645.

Ports/dash/package.sh

@@ -2,8 +2,7 @@
 port=dash
 version=0.5.10.2
 useconfigure=true
-files="http://gondor.apana.org.au/~herbert/dash/files/dash-${version}.tar.gz dash-${version}.tar.gz
-http://gondor.apana.org.au/~herbert/dash/files/dash-${version}.tar.gz.sha256sum dash-${version}.tar.gz.sha256sum"
+files="http://gondor.apana.org.au/~herbert/dash/files/dash-${version}.tar.gz dash-${version}.tar.gz 3c663919dc5c66ec991da14c7cf7e0be8ad00f3db73986a987c118862b5f6071"
 auth_type="sha256"
 
 configure() {

Ports/zstd/package.sh

@@ -1,6 +1,5 @@
 #!/usr/bin/env -S bash ../.port_include.sh
 port=zstd
 version=1.4.4
-files="https://github.com/facebook/zstd/releases/download/v${version}/zstd-${version}.tar.gz zstd-${version}.tar.gz
-https://github.com/facebook/zstd/releases/download/v${version}/zstd-${version}.tar.gz.sha256 zstd-${version}.tar.gz.sha256"
+files="https://github.com/facebook/zstd/releases/download/v${version}/zstd-${version}.tar.gz zstd-${version}.tar.gz 59ef70ebb757ffe74a7b3fe9c305e2ba3350021a918d168a046c6300aeea9315"
 auth_type=sha256