Fix run-dep for ffi on PHP 7.4

Author: cytopia

Dockerfiles/mods/Dockerfile-7.4

@@ -839,7 +839,7 @@ RUN set -eux \
 	libexif12 \
 	libexpat1 \
 	libfbclient2 \
-	libffi6 \
+	libffi7 \
 	libfftw3-3 \
 	libfreetype6 \
 	libgif7 \

build/ansible/group_vars/all/mods.yml

@@ -254,8 +254,6 @@ extensions_available:
   ffi:
     already_avail: [8.0, 8.1]
     disabled: [5.2, 5.3, 5.4, 5.5, 5.6, 7.0, 7.1, 7.2, 7.3]
-    7.4:
-      run_dep: [libffi6]
     all:
       type: builtin
       build_dep: [libffi-dev]