pjproject: bump to 2.11

Note:

Merged upstream (so deleted):
0010-fix-pkgconfig.patch
0014-Add-new-compile-time-setting-PJ_ICE_ST_USE_TURN_PERM.patch
0015-update-local-preference-for-peer-reflexive-candidate.patch
0016-use-addrinfo-instead-CFHOST.patch
0017-CVE-2020-15260.patch
0018-CVE-2021-21375.patch

Merged for 2.12:
0019-ignore-down-interfaces.patch
0020-ignore-addresses-for-RFC7335.patch

Also, fix the assertion in ice_transport.cpp cause
user_mapping_cnt can be equals to PJ_ICE_MAX_COMP.

Change-Id: If6fee261e89c34640519a6b61e94391b57363a22
GitLab: #509