CI: Update dependencies on macOS

CI/before-script-osx.sh

@@ -18,4 +18,5 @@ cmake -DENABLE_SPARKLE_UPDATER=ON \
 -DBUILD_BROWSER=ON \
 -DBROWSER_DEPLOY=ON \
 -DBUILD_CAPTIONS=ON \
+-DWITH_RTMPS=ON \
 -DCEF_ROOT_DIR=$PWD/../../cef_binary_${CEF_BUILD_VERSION}_macosx64 ..

CI/install-dependencies-osx.sh

@@ -40,8 +40,8 @@ ccache -s || echo "CCache is not available."
 
 # Fetch and untar prebuilt OBS deps that are compatible with older versions of OSX
 hr "Downloading OBS deps"
-wget --quiet --retry-connrefused --waitretry=1 https://obs-nightly.s3.amazonaws.com/osx-deps-2018-08-09.tar.gz
-tar -xf ./osx-deps-2018-08-09.tar.gz -C /tmp
+wget --quiet --retry-connrefused --waitretry=1 https://github.com/obsproject/obs-deps/releases/download/2020-04-07/osx-deps-2020-04-07.tar.gz
+tar -xf ./osx-deps-2020-04-07.tar.gz -C /tmp
 
 # Fetch vlc codebase
 hr "Downloading VLC repo"