unlink pkg-config

Author: cmb69

.github/actions/brew/action.yml

@@ -14,6 +14,7 @@ runs:
         # Some packages exist on x86 but not arm, or vice versa.
         # Install them with reinstall to avoid warnings.
         brew reinstall autoconf webp tidy-html5 libzip libsodium icu4c curl openldap
+        brew unlink pkg-config
         brew install \
           pkgconf \
           bison \