Unpin brew's FFmpeg formula

We don't need to use FFmpeg 2.8 as since #1494 we support FFmpeg 5+

Author: palonso

cibuildwheel-tensorflow.toml

@@ -30,10 +30,8 @@ environment = { PROJECT_NAME="essentia-tensorflow", ESSENTIA_PROJECT_NAME="${PRO
 
 before-all = [
   "brew install pkg-config gcc readline sqlite gdbm freetype libpng",
-  "brew install eigen libyaml fftw ffmpeg@2.8 libsamplerate libtag",
-  "brew link --force ffmpeg@2.8",
+  "brew install eigen libyaml fftw ffmpeg libsamplerate libtag",
   "brew install chromaprint",
-  "brew link --overwrite ffmpeg@2.8",
   # Delocate checks for the min OS version (LC_BUILD_VERSION or C_VERSION_MIN_MACOSX).
   # Tensorflow bottle a has minimum target of 14.2 which is too new.
   # We could build from source as a workaround, however, it takes too much time on the CI worker.
@@ -67,10 +65,8 @@ environment = { PROJECT_NAME="essentia-tensorflow", ESSENTIA_PROJECT_NAME="${PRO
 
 before-all = [
   "brew install pkg-config gcc readline sqlite gdbm libpng",
-  "brew install eigen libyaml fftw ffmpeg@2.8 libsamplerate libtag",
-  "brew link --force ffmpeg@2.8",
+  "brew install eigen libyaml fftw ffmpeg libsamplerate libtag",
   "brew install chromaprint",
-  "brew link --overwrite ffmpeg@2.8",
   # Delocate checks for the min OS version (LC_BUILD_VERSION or C_VERSION_MIN_MACOSX).
   # Tensorflow bottle a has minimum target of 15.2 which is too new.
   # We could build from source as a workaround, however, it takes too much time on the CI worker.