Github workflow: Fix linking error on macOS

 Homebrew has multiple versions of python which occasionally step on
 each other. Add the overwrite flag in the install process to
 explicity oveverwrite old links.

 Additionally add a call to brew upgrade to handle issues where
 new packages require updating already installed ones.

.github/workflows/buildmaster.yml

@@ -100,13 +100,14 @@ jobs:
         env:
           OS_VERS: ${{ matrix.os }}
         run: |
-          brew update
-          ${PKGMGR_CMD} install pkg-config ccache qt5 nasm libsamplerate taglib\
-            lzo libcec libbluray libass libhdhomerun dav1d x264 x265 libvpx \
-            openssl sound-touch lame freetype libass libiconv libxml2 libzip \
-            XviD zlib pyenv-virtualenv python-lxml  python-requests \
-            python-setuptools
-          ${PKGMGR_CMD} link qt5 --force
+          ${PKGMGR_CMD} update
+          ${PKGMGR_CMD} upgrade
+          ${PKGMGR_CMD} install pkg-config ccache qt@5 nasm libsamplerate \
+            taglib lzo libcec libbluray libass libhdhomerun dav1d x264 x265 \
+            libvpx openssl sound-touch lame freetype libass libiconv libxml2 \
+            libzip XviD zlib pyenv-virtualenv python-lxml python-requests \
+            python-setuptools --force --overwrite
+          ${PKGMGR_CMD} link qt@5 --force
           # macos-14 updated the linker and needs to be run in "classic" mode
           case $OS_VERS in
             macos-14)
@@ -169,7 +170,7 @@ jobs:
 
       - name: Install plugin dependencies (macOS)
         run: ${PKGMGR_CMD} install minizip flac libvorbis libcdio python-pycurl
-             python-oauthlib
+          python-oauthlib --force --overwrite
         if: runner.os == 'macOS'
 
       - name: Configure plugins