Drop intl on macOS + PHP 8.1 build

Based on the discussion in GH-16286, drop the intl build from macOS + PHP 8.1,
since we cannot build with supported intl versions without too many changes.

Author: iluuu1994

.github/actions/brew/action.yml

@@ -32,5 +32,4 @@ runs:
           libjpeg \
           libxslt \
           postgresql
-        brew reinstall icu4c@74
-        brew link icu4c gettext --force
+        brew link gettext --force

.github/actions/configure-macos/action.yml

@@ -66,7 +66,6 @@ runs:
           --with-ffi \
           --enable-zend-test \
           --enable-dl-test=shared \
-          --enable-intl \
           --with-mhash \
           --with-sodium \
           --enable-dba \