package/c-icap-modules: bump to version 0.5.3

- Remove zlib option (dropped since version 0.5.1 and
  https://github.com/c-icap/c-icap-modules/commit/51e78cf08a0a92b58037abcbbcacba962874d0b0

)
- Add hash for license file

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>