CONFIGURE: Add minimal required version for p11-kit
    
    There are few functions which were added in upstream p11-kit 0.23.3.
    And there are compilation failures with older versions.
    
    src/p11_child/p11_child_openssl.c: In function 'get_pkcs11_uri':
    src/p11_child/p11_child_openssl.c:87:12: error: implicit declaration of function 'p11_kit_uri_get_slot_info' [-Werror=implicit-function-declaration]
         memcpy(p11_kit_uri_get_slot_info(uri), slot_info, sizeof(CK_SLOT_INFO));
                ^
    
    src/p11_child/p11_child_openssl.c:88:5: error: implicit declaration of function 'p11_kit_uri_set_slot_id' [-Werror=implicit-function-declaration]
         p11_kit_uri_set_slot_id(uri, slot_id);
         ^
    
    src/p11_child/p11_child_openssl.c: In function 'do_card':
    src/p11_child/p11_child_openssl.c:767:35: error: implicit declaration of function 'p11_kit_uri_get_slot_id' [-Werror=implicit-function-declaration]
                         uri_slot_id = p11_kit_uri_get_slot_id(uri);
                                       ^
    src/p11_child/p11_child_openssl.c:770:32: error: implicit declaration of function 'p11_kit_uri_match_slot_info' [-Werror=implicit-function-declaration]
                                 || p11_kit_uri_match_slot_info(uri, &info) != 1) {
                                    ^
    Merges: https://pagure.io/SSSD/sssd/pull-request/3852
    
    Reviewed-by: Sumit Bose <sbose@redhat.com>