update to bird-2.0.11

From the release notes:

  o BGP roles (RFC 9234)
  o BGP: Keepalive time scaling
  o BGP: New 'min hold time' and 'min keepalive time' options
  o BGP: New 'next hop prefer global' option
  o Filter: For loops and direct recursion
  o Filter: Mixed declarations of local variables
  o Filter: Improved static type checks
  o Filter: Literal [] for empty set
  o Linux: Netlink KRT improvements
  o BSD: Experimental support for Netlink API
  o Memory management improvements
  o Many bugfixes

  In contrast to prior versions, configured keepalive time in BGP now scales
  with negotiated hold time to maintain proportion between the keepalive time
  and the hold time.

  There is a minor change in recursive next hop processing. Previously,
  recursive next hop must be resolved through a non-recursive route, now it must
  be resolved through a prefix where both the best route and all routes with the
  same preference (as the best route) are non-recursive. The old behavior might
  lead in some corner cases to an infinite loop of recursive next hop resolution
  due to a priority inversion.

net/bird/2/Makefile

@@ -1,4 +1,4 @@
-DISTNAME=	bird-2.0.10
+DISTNAME=	bird-2.0.11
 
 COMPILER=	base-clang ports-gcc
 COMPILER_LANGS=	c

net/bird/2/distinfo

@@ -1,4 +1,4 @@
-SHA256 (bird-2.0.10.tar.gz) = ftNB3djch/qXNlhrNRVEeoQ2/sRC1l9AIhVaud4f/Vo=
-SHA256 (bird-doc-2.0.10.tar.gz) = 6cFNuoC3w7XsQvHiPDzCCs1PblKdl0aWLQgho4I0Y50=
-SIZE (bird-2.0.10.tar.gz) = 1276546
-SIZE (bird-doc-2.0.10.tar.gz) = 928479
+SHA256 (bird-2.0.11.tar.gz) = YKe4O2e50InSp0WhH93RJGH2MavHtkW2wIWt+Qs/VdY=
+SHA256 (bird-doc-2.0.11.tar.gz) = 4r1+zyPkCFxRHCysgFXCi/NSuDCQ0M21TWNHv5NJ0io=
+SIZE (bird-2.0.11.tar.gz) = 1301502
+SIZE (bird-doc-2.0.11.tar.gz) = 925018