package/asterisk: security bump to version 16.1.0

package/asterisk: security bump to version 16.1.0

Fixes the following security issues:

- ASTERISK-28127: Buffer overflow for DNS SRV/NAPTR records
  https://issues.asterisk.org/jira/browse/ASTERISK-28127

- ASTERISK-28013: res_http_websocket: Crash when reading HTTP Upgrade
  requests
  https://issues.asterisk.org/jira/browse/ASTERISK-28013

For more details, see the announcement:
https://www.asterisk.org/downloads/asterisk-news/asterisk-1610-now-available

Asterisk now also contains m4 code needed to autoreconf under
third-party/jansson, so add that to _AUTORECONF_OPTS.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>