Log Message:
p11-kit: update to 0.23.21.

0.23.21 (stable)
 * proxy: Do not assign duplicate slot IDs [PR#282]
 * common: Get program name based on executable path if possible [PR#307]
 * anchor: Exit with non-zero code, if any error occurs [PR#304]
 * Build and test fixes [PR#283, PR#290, PR#291, PR#292, PR#296, PR#299, PR#305, \ 
PR#306, PR#309, PR#311]

0.23.20 (stable)
 * Revert "Fix RPC when length-s are 0" changes [PR#276]

0.23.19 (stable)
 * common: add Russian PKCS#11 extensions to pkcs11x.h header [PR#255]
 * Add simple bash completion for provided commands [PR#258]
 * Unbreak list matching in enable-in and disable-in [PR#262]
 * Fix RPC when length-s are 0 [PR#259]
 * rpc: Add vsock transport support [PR#270]
 * trust: Support CKA_NSS_{SERVER,EMAIL}_DISTRUST_AFTER [PR#265]
 * Build fixes [PR#271, PR#272, PR#273, ...]

0.23.18 (stable)
 * rpc: Allow empty CK_DATE value [PR#253]
 * build: Meson fixes [PR#245]
 * build: Adjust feature parity between meson and autotools [PR#247]

0.23.17 (stable)
 * common: Fix uClibc-ng compilation [PR#237]
 * trust: do not allow daylight to invalidate date validation [PR#236]
 * build: Port to meson build system [PR#231, PR#234]
 * rpc: On UNIX wait on condition variable instead of FD if header is for a \ 
different thread [PR#232]
 * doc: Add 'server' command in help [PR#229]
 * Build and test fixes [PR#230]

0.23.16 (stable)
 * proxy: Support C_WaitForSlotEvent() if CKF_DONT_BLOCK is specified [PR#225]
 * conf: Ignore user configuration if the program is running as root [PR#226]
 * proxy: Refresh slot list on every C_GetSlotList call [PR#224]
 * modules: Fix index used in call to p11_dict_remove() [PR#219]
 * Fix Win32 p11_dl_error crash [PR#218]
 * modules: check gl.modules before iterates on it when freeing [PR#217]
 * trust: Ignore unreadable content in anchors [PR#215]
 * extract-jks: Prefer _p11_extract_jks_timestamp to SOURCE_DATE_EPOCH [PR#213]