package/libcap: bump to version 2.42

package/libcap: bump to version 2.42

- Drop first patch (already in version:
  https://git.kernel.org/pub/scm/linux/kernel/git/morgan/libcap.git/commit/?id=22f2e207f7824d231aab4de973e547f006e3ea3c)
- Drop second patch (already in version:
  https://git.kernel.org/pub/scm/linux/kernel/git/morgan/libcap.git/commit/?id=786b64b72b5ba3d4b6195f40c0096932d2c72b57)
- Drop third patch (not needed since
  https://git.kernel.org/pub/scm/linux/kernel/git/morgan/libcap.git/commit?id=f1c3ac995d02d4f17b9d15656ab6d58f4c87435a)
- Update indentation in hash file (two spaces)

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