Force override macos deps in CI

.ci/macos/Brewfile

 tap "nlohmann/json"
 
+brew "python3"
 brew "pkg-config"
 brew "clang-format"
 brew "cmake"
 brew "ninja"
 brew "openssl"
 brew "qt5"
-brew "python3"
 brew "nlohmann_json"
 brew "gstreamer"
 brew "gst-plugins-base"

.gitlab-ci.yml

@@ -52,7 +52,8 @@ build-macos:
   tags: [macos]
   before_script:
     - brew update
-    - brew bundle --file=./.ci/macos/Brewfile
+    - brew reinstall --force python3
+    - brew bundle --file=./.ci/macos/Brewfile --force --cleanup
     - pip3 install dmgbuild
   script:
     - export PATH=/usr/local/opt/qt/bin/:${PATH}