[CI] use specific GitHub release for macOS dependencies

CI/mac/before_install.sh

@@ -5,5 +5,5 @@ echo DEVELOPER_DIR=/Applications/Xcode_13.4.1.app >> $GITHUB_ENV
 brew install ninja
 
 mkdir ~/.conan ; cd ~/.conan
-curl -L "https://github.com/vcmi/vcmi-deps-macos/releases/latest/download/$DEPS_FILENAME.txz" \
+curl -L "https://github.com/vcmi/vcmi-deps-macos/releases/download/1.1/$DEPS_FILENAME.txz" \
 	| tar -xf -