[ffmpeg] use fdk-aac[he-aac] for fdk-aac feature

There is no point to this feature without HE-AAC because FFmpeg has
its own AAC codec that does not support HE-AAC.

ports/ffmpeg/vcpkg.json

@@ -1,7 +1,7 @@
 {
   "name": "ffmpeg",
   "version": "4.4",
-  "port-version": 12,
+  "port-version": 13,
   "description": [
     "a library to decode, encode, transcode, mux, demux, stream, filter and play pretty much anything that humans and machines have created.",
     "FFmpeg is the leading multimedia framework, able to decode, encode, transcode, mux, demux, stream, filter and play pretty much anything that humans and machines have created. It supports the most obscure ancient formats up to the cutting edge. No matter if they were designed by some standards committee, the community or a corporation. It is also highly portable: FFmpeg compiles, runs, and passes our testing infrastructure FATE across Linux, Mac OS X, Microsoft Windows, the BSDs, Solaris, etc. under a wide variety of build environments, machine architectures, and configurations."
@@ -299,9 +299,15 @@
       ]
     },
     "fdk-aac": {
-      "description": "AAC de/encoding via libfdk-aac",
+      "description": "AAC de/encoding via libfdk-aac, **including GPL-incompatible patent-encumbered HE-AAC**. If you do not require HE-AAC, use the built-in FFmpeg AAC codec.",
       "dependencies": [
-        "fdk-aac",
+        {
+          "name": "fdk-aac",
+          "default-features": false,
+          "features": [
+            "he-aac"
+          ]
+        },
         {
           "name": "ffmpeg",
           "default-features": false,

versions/baseline.json

@@ -1998,7 +1998,7 @@
     },
     "ffmpeg": {
       "baseline": "4.4",
-      "port-version": 12
+      "port-version": 13
     },
     "ffnvcodec": {
       "baseline": "10.0.26.0",

versions/f-/ffmpeg.json

@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "26e3d87d6b3049b45355f36a34402b938d5b486d",
+      "version": "4.4",
+      "port-version": 13
+    },
     {
       "git-tree": "4d910207840ec65730eb972e472dab548fb8b5d2",
       "version": "4.4",