community/alembic: rebuild with latest community/hdf5

Currently an old version is linked:

    > doas apk add blender
    ERROR: unable to select packages:
      so:libhdf5.so.310 (no such package):
        required by: alembic-libs-1.8.6-r1[so:libhdf5.so.310]

Fixes: alpine/aports#16092

community/alembic/APKBUILD

@@ -2,7 +2,7 @@
 # Maintainer: Leon Marz <main@lmarz.org>
 pkgname=alembic
 pkgver=1.8.6
-pkgrel=1
+pkgrel=2
 pkgdesc="Open framework for storing and sharing scene data"
 url="https://www.alembic.io/"
 arch="all !s390x" # alembic does not support big-endian, which s390x uses