cirrus: switch to openldap24-client

... as it seems openldap-client doesn't exist anymore.

Reported-by: Jay Satiro
Fixes #7868
Closes #7869

.cirrus.yml

@@ -43,7 +43,7 @@ freebsd_task:
 
   pkginstall_script:
     - pkg update -f
-    - pkg install -y autoconf automake libtool pkgconf brotli openldap-client heimdal libpsl libssh2 openssh-portable libidn2 librtmp libnghttp2 nghttp2 stunnel
+    - pkg install -y autoconf automake libtool pkgconf brotli openldap24-client heimdal libpsl libssh2 openssh-portable libidn2 librtmp libnghttp2 nghttp2 stunnel
     - pkg delete -y curl
     - easy_install "cryptography<3.2"
     - easy_install "pyOpenSSL<20.0"