Bump psycopg2-binary from 2.8.2 to 2.8.4

[dependabot-preview]

Bumps psycopg2-binary from 2.8.2 to 2.8.4.

Changelog

Sourced from psycopg2-binary's changelog.

Current release

What's new in psycopg 2.8.4
^^^^^^^^^^^^^^^^^^^^^^^^^^^

• Fixed building with Python 3.8 (:ticket:[#854](https://github.com/psycopg/psycopg2/issues/854)).
• Don't swallow keyboard interrupts on connect when a password is specified
  in the connection string (:ticket:[#898](https://github.com/psycopg/psycopg2/issues/898)).
• Don't advance replication cursor when the message wasn't confirmed
  (:ticket:[#940](https://github.com/psycopg/psycopg2/issues/940)).
• Fixed inclusion of time.h on linux (:ticket:[#951](https://github.com/psycopg/psycopg2/issues/951)).
• Fixed int overflow for large values in ~psycopg2.extensions.Column.table_oid
  and ~psycopg2.extensions.Column.type_code (:ticket:[#961](https://github.com/psycopg/psycopg2/issues/961)).
• ~psycopg2.errorcodes map and ~psycopg2.errors classes updated to
  PostgreSQL 12.
• Wheel package compiled against OpenSSL 1.1.1d and PostgreSQL at least 11.4.

What's new in psycopg 2.8.3
^^^^^^^^^^^^^^^^^^^^^^^^^^^

• Added interval_status parameter to
  ~psycopg2.extras.ReplicationCursor.start_replication() method and other
  facilities to send automatic replication keepalives at periodic intervals
  (:ticket:[#913](https://github.com/psycopg/psycopg2/issues/913)).
• Fixed namedtuples caching introduced in 2.8 (:ticket:[#928](https://github.com/psycopg/psycopg2/issues/928)).

What's new in psycopg 2.8.2
^^^^^^^^^^^^^^^^^^^^^^^^^^^

• Fixed ~psycopg2.extras.RealDictCursor when there are repeated columns
  (:ticket:[#884](https://github.com/psycopg/psycopg2/issues/884)).
• Binary packages built with openssl 1.1.1b. Should fix concurrency problems
  (:tickets:[#543](https://github.com/psycopg/psycopg2/issues/543), [#836](https://github.com/psycopg/psycopg2/issues/836)).

What's new in psycopg 2.8.1
^^^^^^^^^^^^^^^^^^^^^^^^^^^

• Fixed ~psycopg2.extras.RealDictRow modifiability (:ticket:[#886](https://github.com/psycopg/psycopg2/issues/886)).
• Fixed "there's no async cursor" error polling a connection with no cursor
  (:ticket:[#887](https://github.com/psycopg/psycopg2/issues/887)).

What's new in psycopg 2.8

New features:

... (truncated)

Commits

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