Update psycopg2-binary requirement from ~=2.8.3 to ~=2.8.6

[dependabot]

Updates the requirements on psycopg2-binary to permit the latest version.

Changelog

Sourced from psycopg2-binary's changelog.

Current release

What's new in psycopg 2.8.6 ^^^^^^^^^^^^^^^^^^^^^^^^^^^

• Fixed memory leak changing connection encoding to the current one (:ticket:[#1101](https://github.com/psycopg/psycopg2/issues/1101)).
• Fixed search of mxDateTime headers in virtualenvs (:ticket:[#996](https://github.com/psycopg/psycopg2/issues/996)).
• Added missing values from errorcodes (:ticket:[#1133](https://github.com/psycopg/psycopg2/issues/1133)).
• cursor.query reports the query of the last :sql:COPY opearation too (:ticket:[#1141](https://github.com/psycopg/psycopg2/issues/1141)).
• ~psycopg2.errorcodes map and ~psycopg2.errors classes updated to PostgreSQL 13.
• Added wheel packages for ARM architecture (:ticket:[#1125](https://github.com/psycopg/psycopg2/issues/1125)).
• Wheel package compiled against OpenSSL 1.1.1g.

What's new in psycopg 2.8.5 ^^^^^^^^^^^^^^^^^^^^^^^^^^^

• Fixed use of !connection_factory and !cursor_factory together (:ticket:[#1019](https://github.com/psycopg/psycopg2/issues/1019)).
• Added support for ~logging.LoggerAdapter in ~psycopg2.extras.LoggingConnection (:ticket:[#1026](https://github.com/psycopg/psycopg2/issues/1026)).
• ~psycopg2.extensions.Column objects in cursor.description can be sliced (:ticket:[#1034](https://github.com/psycopg/psycopg2/issues/1034)).
• Added AIX support (:ticket:[#1061](https://github.com/psycopg/psycopg2/issues/1061)).
• Fixed ~copy.copy() of ~psycopg2.extras.DictCursor rows (:ticket:[#1073](https://github.com/psycopg/psycopg2/issues/1073)).

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 ^^^^^^^^^^^^^^^^^^^^^^^^^^^

... (truncated)

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