ci, wheels: fix in musllinux wheel building

Author: proycon

.github/workflows/wheels.yml

@@ -32,7 +32,8 @@ jobs:
               elif command -v yum; then
                 yum install -y git libicu-devel libxml2-devel libxslt-devel libexttextcat zlib-devel bzip2-devel libtool autoconf-archive autoconf automake m4 wget
               elif command -v apk; then
-                apk add build-base git autoconf-archive autoconf automake libtool bzip2-dev icu-dev libxml2-dev libexttextcat-dev libtool
+                apk add build-base git autoconf-archive autoconf automake libtool bzip2-dev icu-dev libxml2-dev libexttextcat-dev libtool rsync &&
+                rsync -av --ignore-existing /usr/share/aclocal/*.m4 /usr/local/share/aclocal/
               fi &&
               ./build-deps.sh
            CIBW_BEFORE_ALL_MACOS: >