intel-media-sdk: mark vulnerable

The upstream repo was archived on 2023-05-17 with the following comment:

> This project has been identified as having known security escapes.

It is now clear what (some) of these are, which prompts marking this
package as vulnerable.

This is now safe to do, as it is not a default part of our ffmpeg-full
package any longer.

pkgs/by-name/in/intel-media-sdk/package.nix

@@ -69,6 +69,16 @@ stdenv.mkDerivation rec {
       midchildan
       pjungkamp
     ];
+    knownVulnerabilities = [
+      ''
+        End of life with various local privilege escalation vulnerabilites:
+          - CVE-2023-22656
+          - CVE-2023-45221
+          - CVE-2023-47169
+          - CVE-2023-47282
+          - CVE-2023-48368
+      ''
+    ];
     platforms = [ "x86_64-linux" ];
   };
 }