Fix macOS build - drop python3 (#2612)

Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>

.github/workflows/macos.yml

@@ -26,7 +26,7 @@ jobs:
       - name: Install packages
         run: |
           brew update
-          brew install autoconf automake libtool flex bison python3
+          brew install autoconf automake libtool flex bison
           sed -i.bak '/^AM_INIT_AUTOMAKE(\[-Wno-portability 1\.14\])$/s/14/11/' modules/oniguruma/configure.ac
       - name: Build
         env: