Log Message:
net/powerdns: Update to 4.4.1

* Released: 8th of February 2021

* Improvements:
  - debian packaging update
  - dockerfiles: do not claim equivs-dummy is built from the pdns source
    package
  - Fix missing #include for gcc-11
  - lmdb: Do a mdb_readers_check to clean up stale readers on database load

* Bug Fixes:
  - fix TCP answer counters
  - run deleteDomain() inside a transaction
  - lmdb: do not reuse backend that has seen corrupted data
  - lmdb: serialise LMDBBackend construction to ensure only a single schema
    upgrade is attempted
  - backport some asan/ubsan fixes
  - pdnsutil edit-zone: do not exit on ZoneParser exception

Full changelog:
https://doc.powerdns.com/authoritative/changelog/4.4.html#change-4.4.1