package/libtasn1: security bump to version 4.17.0

package/libtasn1: security bump to version 4.17.0

- Fix some clang issues due to illegal pointers, thanks to Stefan Weil.
- Fix memory leak caught by oss-fuzz, thanks to Dmitry Baryshkov.
- Fix bugs unveiled by Static Analysis, reported by Simo Sorce.

- LICENSE has been renamed to COPYING since
  https://gitlab.com/gnutls/libtasn1/-/commit/a72a8d1ef13436bf8916097f11c3fc90f07ba911

https://gitlab.com/gnutls/libtasn1/-/blob/v4.17.0/NEWS

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>