libp11: update to 0.4.18

libp11: update to 0.4.18

Changes since 0.4.16:

0.4.18 (2026-02-16):
 * Support for RSA-PSS and RSA-OAEP using keys retrieved using the
   PKCS11_get_private_key() libp11 API and the PKCS#11 provider.
 * Improved test coverage.

0.4.17 (2026-02-01):
 * Ed25519 and Ed448 support (PKCS#11 v3.2).
 * Fixed OPENSSL_NO_EC builds.
 * Reverted RSA public exponent change from PR #474.
 * Fixed crash on module initialization failures.
 * Ignoring trailing newlines in pin-source files.
 * Initial build fixes for the upcoming OpenSSL 4.x.

Drop the now obsolete 001-fix-install.patch which has been merged
upstream.

Link: https://github.com/OpenSC/libp11/blob/libp11-0.4.18/NEWS
Signed-off-by: Daniel Golle <redacted>