minizip: bump to version 2.8.2

minizip: bump to version 2.8.2

- libbsd is now an optional dependency as HAVE_ARC4RANDOM_BUF is not
  always defined since version 2.7.1 and:
  https://github.com/nmoinvaz/minizip/commit/c73ef6e69b320349604c620bc429c461de8659af
- openssl is an optional dependency since version 2.7.0 and:
  https://github.com/nmoinvaz/minizip/commit/e5a5617a7c765858c1ed6fb0d40b6a750ff10131
- libiconv is an optional dependency since version 2.7.1 and:
  https://github.com/nmoinvaz/minizip/commit/6209991d6be5b070fb92d2aca6ed668c3db0829f

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>