Bump psycopg2-binary from 2.8.5 to 2.8.6 (#2600)

Bumps [psycopg2-binary](https://github.com/psycopg/psycopg2) from 2.8.5 to 2.8.6.
- [Release notes](https://github.com/psycopg/psycopg2/releases)
- [Changelog](https://github.com/psycopg/psycopg2/blob/master/NEWS)
- [Commits](https://github.com/psycopg/psycopg2/commits)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

requirements.txt

@@ -18,7 +18,7 @@ newrelic==5.16.2.147
 PasteDeploy==2.1.0
 plaster==1.0
 plaster-pastedeploy==0.7
-psycopg2-binary==2.8.5
+psycopg2-binary==2.8.6
 pycparser==2.20
 pyramid==1.10.4
 pyramid-mailer==0.15.1